NITTAN Corporation

Japan

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2025 (YTD) 1
2024 1
2023 5
2022 1
2021 6
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IPC Class
B21K 1/22 - Making machine elements valve parts poppet valves, e.g. for internal-combustion engines 14
B23P 15/00 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass 14
F01L 3/14 - Cooling of valves by means of a liquid or solid coolant, e.g. sodium, in a closed chamber in a valve 11
F01L 3/04 - Coated valve members or valve seats 10
F01L 3/02 - Selecting particular materials for valve members or valve seatsValve members or valve seats composed of two or more materials 9
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NICE Class
07 - Machines and machine tools 8
12 - Land, air and water vehicles; parts of land vehicles 5

1.

ENGINE VALVE VALVETRAIN

      
Application Number JP2023035737
Publication Number 2025/069413
Status In Force
Filing Date 2023-09-29
Publication Date 2025-04-03
Owner NITTAN CORPORATION (Japan)
Inventor
  • Inoue Masaaki
  • Nakano Hiroki
  • Yamada Shoya

Abstract

Provided is an engine valve valvetrain (1) comprising: rocker arms (3), each having a tip portion (3a) that is caused to oscillate and rotate by a cam (2); a valve bridge (11) that is supported to be able to oscillate in a reciprocating manner within a cylinder head (8), and that has a lash adjuster (6) on each of arm portions (11a, 11b); engine valves (5) that are in contact with the lash adjusters (6); and a valve spring (7) that biases the valve bridge (11) toward the tip portions of the rocker arms. Each lash adjuster (6) comprises: a cylindrical plunger (13) that is internally provided with a first oil reservoir chamber (13a); a body (14) that slidably supports the plunger (13) via a plunger spring (15) provided in a second oil reservoir chamber (18); and a check ball (16) that is disposed within the second oil reservoir chamber (18) and that is biased, via a ball spring (17), against an inner edge (13c) of a hole (13b) in a bottom portion of the plunger (13). Each of the arm portions (11a, 11b) has a first oil supply port (19) formed to open on a top surface and reach an upper portion of the plunger (13). The first oil supply port (19) is formed to have substantially the same inner diameter as the first oil reservoir chamber (13a). The upper portion of the plunger (13) has a second oil supply port (20) that opens toward the first oil reservoir chamber (13a).

IPC Classes  ?

  • F01L 1/245 - Hydraulic tappets
  • F01L 1/26 - Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gearValve-gear or valve arrangements, e.g. lift-valve gear peculiar to machines or engines with more than two lift valves per cylinder

2.

CYLINDER HEAD FOR INTERNAL COMBUSTION ENGINE AND INTERNAL COMBUSTION ENGINE

      
Application Number JP2022027655
Publication Number 2024/013918
Status In Force
Filing Date 2022-07-14
Publication Date 2024-01-18
Owner NITTAN CORPORATION (Japan)
Inventor
  • Lee Tai-Hwan
  • Tanabe Soichi
  • Ichimiya Atsuyuki

Abstract

Provided are: a cylinder head that can prevent knocking caused by premature ignition in a combustion chamber of an internal combustion engine that uses decarbonized fuel containing hydrogen; and an internal combustion engine. A cylinder head (2) of an internal combustion engine, the internal combustion engine using decarbonized fuel containing hydrogen, is provided with a poppet-type intake valve (5) and an exhaust valve (6) that open and close an intake port (2a) and an exhaust port (2b), respectively, the intake port (2a) and the exhaust port (2b) opening to the combustion chamber, and the intake valve (5) and an exhaust valve (6) each having an umbrella part (5b, 6b) formed on a shaft end side. The exhaust valve (6) is a coolant-filled hollow valve having water (10) enclosed as the coolant in a hollow section (9) that extends from the umbrella part (6b) to the shaft end side. The intake valve (5) is a solid valve having, on the entire bottom surface (5b4) of the umbrella part thereof, protrusions (11) that are arranged in a lattice shape in a plan view and that are demarcated by numerous parallel intersecting grooves (12).

IPC Classes  ?

  • F01L 3/02 - Selecting particular materials for valve members or valve seatsValve members or valve seats composed of two or more materials

3.

POWER STORAGE DEVICE FOR ELECTRIC VEHICLES

      
Application Number JP2022023003
Publication Number 2023/238250
Status In Force
Filing Date 2022-06-07
Publication Date 2023-12-14
Owner NITTAN CORPORATION (Japan)
Inventor
  • Kameda Michihiro
  • Tanaka Akifumi

Abstract

The present technology pertains to a power storage device for electric vehicles that assists in charging a traction battery. In an electric vehicle power storage device (1) that is equipped with an inverter (3), a main conducting path (20), and an electric vehicle battery cluster (4), an auxiliary storage device (21) for supplying power to the electric vehicle battery cluster (4) from a traction motor (2) is connected via a branch conducting path (22) branching from the main conducting path (20). The auxiliary power storage device (21) is equipped with a power storage unit (27) that includes a capacitor (23). When the voltage Vc of the capacitor (23) becomes lower than an intermediate voltage (V1) during a regeneration operation of the traction motor (2), the traction motor (2) charges the capacitor (23). When the voltage (Vt) of the power storage unit (27) exceeds the voltage (Vm) of the traction battery (5), the power storage unit (27) charges the electric vehicle battery cluster (4).

IPC Classes  ?

  • B60L 58/10 - Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries

4.

PLANETARY GEAR REDUCER

      
Application Number JP2022023515
Publication Number 2023/238400
Status In Force
Filing Date 2022-06-10
Publication Date 2023-12-14
Owner NITTAN CORPORATION (Japan)
Inventor
  • Kameda Michihiro
  • Kimori Takatoshi

Abstract

Provided is a reducer that is rigid with a small number of parts and is configured to be short in the axial direction. Provided is a reducer (W1), comprising: an input shaft (10) having an eccentric portion (12); a fixed sun gear (20) formed from an external gear that is coaxial with the input shaft (10); a first planetary gear (31) having an internal gear meshing with the fixed sun gear (20) and provided on the eccentric portion (12) of the input shaft (10); a driven sun gear (40) disposed on the same axis as the axis of rotation of the input shaft (10) and formed from an external gear that outputs a reduction output; and a second planetary gear (33) having an internal gear meshing with the driven sun gear (40) and provided on the eccentric portion (12) of the input shaft (10), wherein the first planetary gear (31) and the second planetary gear (33) are formed integrally in the axial direction and configure a planetary gear train (30). By configuring a pair of planetary gears of a 2KH type hypocycloid reducer from internal gears, the shaft length can be shortened and a large reduction ratio can be achieved.

IPC Classes  ?

  • F16H 1/32 - Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear

5.

PLANETARY GEAR REDUCER

      
Application Number JP2022023516
Publication Number 2023/238401
Status In Force
Filing Date 2022-06-10
Publication Date 2023-12-14
Owner NITTAN CORPORATION (Japan)
Inventor
  • Kameda Michihiro
  • Kimori Takatoshi

Abstract

Provided is a gear reducer that has high rigidity and can suppress the occurrence of vibration and noise. Provided is a planetary gear reducer (W1) provided with: an input shaft (10) having a first eccentric part (12) and a second eccentric part (14), which form a pair; a stationary sun gear (20) comprising an external gear provided coaxially with the input shaft (10); a first planetary gear (30) having an internal gear that meshes with the stationary sun gear (20) and provided on the first eccentric part (12); a driven sun gear (40) disposed coaxially with the axis of rotation of the input shaft (10) and comprising an external gear that outputs a speed reducing output; a second planetary gear (70) that has an internal gear that meshes with the driven sun gear (40), is configured to have a gear ratio different from that of the first planetary gear (30), and can receive eccentric input from the second eccentric part (14); and a coupling member (60) of a crankshaft disposed between the first planetary gear (30) and the second planetary gear (70). The coupling member (60) moves the planetary gears integrally with each other so that the same work as counterweights, and restricts the rotation of the planetary gears.

IPC Classes  ?

  • F16H 1/32 - Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear

6.

SPEED REDUCER

      
Application Number JP2022015856
Publication Number 2023/188071
Status In Force
Filing Date 2022-03-30
Publication Date 2023-10-05
Owner NITTAN CORPORATION (Japan)
Inventor
  • Yoshino Ryoichi
  • Kameda Michihiro
  • Kimori Takatoshi
  • Sato Daiki

Abstract

Provided is a speed reducer constructed in a well-balanced, compact size. A speed reducer (W1) comprises: an input shaft (1) with an eccentric part (1a); an output shaft (10) having a flange part (10a), and a circular hole (10b) formed in the flange part (10a), on a circumferential orbit centered on a rotation axis; a fixed inner trochoid plate (7) having a through-hole (7a), and a wavy curved surface formed on an inner circumferential side surface (7b) of the through-hole; a pin (6) held between the inner circumferential side surface (7b) of the inner trochoid plate (7) and an outer circumferential side surface of the eccentric part (1a); and a holding member (8) that holds the pin (6) while restricting rotation of the pin (6). One end of the pin (6) is rotatably received in the circular hole (10b) while being at least partially abutted on the inner circumferential side surface of the circular hole (10b). The rotation of the input shaft (1) causes a rotational motion of the pin (6) around the eccentric part (1a), and the rotational motion of the pin causes the output shaft (10) to rotate.

IPC Classes  ?

  • F16H 1/32 - Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear

7.

Method for manufacturing engine poppet valve

      
Application Number 17936389
Grant Number 11850690
Status In Force
Filing Date 2022-09-29
First Publication Date 2023-01-19
Grant Date 2023-12-26
Owner NITTAN Corporation (Japan)
Inventor
  • Yoshino, Ryoichi
  • Sato, Daiki
  • Sasagawa, Yuki

Abstract

A method for manufacturing an engine poppet valve comprising a valve head portion manufacturing operation in which hot forging is employed to form a stem/head intermediate product; a stepped stem portion manufacturing operation in which cold drawing is employed to cause a stepped stem portion comprising a first stem portion which has been made to be of decreased diameter, a step portion which has been formed by a stem member inlet surface, and a second stem portion in which there is absence of decrease in diameter and which is continuous by way of the step portion with the first stem portion to be formed from an intermediate stem portion; and a joining operation in which a stem end portion having a same outside diameter as the first stem portion is joined to a base end portion of the first stem portion.

IPC Classes  ?

  • B23P 15/00 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass

8.

N

      
Application Number 1640206
Status Registered
Filing Date 2021-11-11
Registration Date 2021-11-11
Owner NITTAN Corporation (Japan)
NICE Classes  ?
  • 07 - Machines and machine tools
  • 12 - Land, air and water vehicles; parts of land vehicles

Goods & Services

Metalworking machines and tools; mining machines and apparatus; construction machines and apparatus; loading-unloading machines and apparatus; industrial fishing machines; chemical processing machines and apparatus; textile machines and apparatus; food or beverage processing machines and apparatus; lumbering, woodworking, or veneer or plywood making machines and apparatus; pulp making, papermaking or paper-working machines and apparatus; printing or bookbinding machines and apparatus; sewing machines; agricultural machines and agricultural implements, other than hand-operated; shoe making machines; leather tanning machines; tobacco processing machines; glassware manufacturing machines and apparatus; painting machines and apparatus; packaging or wrapping machines and apparatus; power-operated potters' wheels; plastic processing machines and apparatus; semiconductor manufacturing machines and systems; machines and apparatus for manufacturing rubber goods; stone working machines and apparatus; non-electric prime movers, not for land vehicles; parts of non-electric prime movers; pneumatic or hydraulic machines and instruments; adhesive tape dispensing machines; automatic stamping machines; vending machines; fuel dispensing machines for service stations; washing machines [laundry]; repairing or fixing machines and apparatus; mechanical parking systems; vehicle washing installations; food mixing machines for commercial use; food peeling machines for commercial use; food cutting, chopping and slicing machines for commercial use; dishwashers; machines and apparatus for wax-polishing, electric; vacuum cleaners; power sprayers for disinfecting, insecticides and deodorants [not for agricultural purposes]; machine elements, not for land vehicles; valves, machine elements not for land vehicles; lawnmowers; curtain drawing devices electrically operated; electric door openers; waste compacting machines and apparatus for industrial purposes; waste crushing machines for industrial purposes; 3D printers; starters for motors and engines; AC motors and DC motors [not including those for land vehicles but including parts for any AC motors and DC motors]; AC generators [alternators]; DC generators; electric food blenders for household purposes; dynamo brushes; reduction gears, machine elements not for land vehicles. Traction engine; ropeways for cargo or freight handling; non-electric prime movers for land vehicles, not including their parts; mechanical elements for land vehicles; parachutes; anti-theft alarms for vehicles; wheelchairs; AC motors or DC motors for land vehicles, not including their parts; vessels and their parts and fittings; aircraft and their parts and fittings; railway rolling stock and their parts and fittings; automobiles and their parts and fittings; two-wheeled motor vehicles, bicycles and their parts and fittings; rickshaws; sleighs and sleds [vehicles]; trolleys; carts; horse-drawn carriages; riyakah [two-wheeled carts]; adhesive rubber patches for repairing tubes or tires; baby carriage [prams]; reduction gears, machine elements for land vehicles.

9.

N

      
Serial Number 79331662
Status Registered
Filing Date 2021-11-11
Registration Date 2023-09-26
Owner NITTAN Corporation (Japan)
NICE Classes  ?
  • 07 - Machines and machine tools
  • 12 - Land, air and water vehicles; parts of land vehicles

Goods & Services

Metalworking machines and tools in the nature of metalworking machine tools; mining machines and apparatus in the nature of mining bits; construction machines and apparatus, namely, road construction machines; loading-unloading machines and apparatus in the nature of front end loaders; industrial fishing machines, namely, fish-netting machines; chemical processing machines and apparatus, namely, extracting machines for chemical processing; textile machines and apparatus, namely, machines for dyeing textiles; food or beverage processing machines and apparatus, namely, packaging machines for food and beverages; lumbering, woodworking, or veneer or plywood making machines and apparatus, namely, lumbering band saws; pulp making, papermaking or paper-working machines and apparatus, namely, paper making machines; printing or bookbinding machines and apparatus, namely, industrial printing machines; sewing machines; agricultural machines and agricultural implements, other than hand-operated, namely, agricultural elevators; shoe making machines; leather tanning machines; tobacco processing machines; glassware manufacturing machines and apparatus in the nature of glass-working machines; painting machines and apparatus in the nature of paint sprayers; packaging or wrapping machines and apparatus, namely, wrapping machines; power-operated potters' wheels; plastic processing machines and apparatus in the nature of extrusion machines for plastic; semiconductor manufacturing machines and systems primarily comprised of semiconductor manufacturing machines as well as electronic controllers for these machines; machines and apparatus in the nature of rubber vulcanizing apparatus for manufacturing rubber goods; stone working machines and apparatus in the nature of stone cutting machines; non-electric prime movers, not for land vehicles; parts of non-electric prime movers, namely, fans for nonelectric prime movers; pneumatic or hydraulic machines and instruments, namely, pneumatic conveyors; adhesive tape dispensing machines; automatic stamping machines; vending machines; fuel dispensing machines for service stations; laundry washing machines; repairing or fixing machines and apparatus, namely, shoe-fixing machines; mechanical parking systems; vehicle washing installations; electric food mixing machines for commercial use; food peeling machines for commercial use; food cutting, chopping and slicing machines for commercial use; dishwashers; machines and apparatus for wax-polishing, electric, namely, floor polishing machines; vacuum cleaners; power sprayers for disinfecting, insecticides and deodorants not for agricultural purposes; machine elements, not for land vehicles, namely, valves, breaks, gears, and valve lifters; valves being machine elements not for land vehicles; lawnmowers; curtain drawing devices electrically operated; electric door openers; waste compacting machines and apparatus in the nature of waste disposal units for industrial purposes; waste crushing machines for industrial purposes; 3D printers; starters for motors and engines; AC motors and DC motors other than those for land vehicles; AC generators; DC generators; electric food blenders for household purposes; dynamo brushes; reduction gears being machine elements not for land vehicles Traction engine; ropeways for cargo or freight handling; non-electric prime movers for land vehicles, not including their parts; mechanical elements for land vehicles, namely, valves, breaks, gears, and valve lifters; parachutes; anti-theft alarms for vehicles; wheelchairs; AC motors and DC motors for land vehicles, not including their parts; vessels and their replacement parts and fittings; aircraft and their structural parts and fittings; railway rolling stock and their structural parts and fittings; automobiles and their structural parts and fittings; two-wheeled motor vehicles, bicycles and their structural parts and fittings; rickshaws; sleighs for transport purposes and sleds for transport purposes; trolleys; carts; horse-drawn carriages; riyakah being bicycle trailers; adhesive rubber patches for repairing tubes or tires; baby carriage; reduction gears being machine elements for land vehicles

10.

Cylinder head and engine

      
Application Number 16330363
Grant Number 11143063
Status In Force
Filing Date 2016-09-02
First Publication Date 2021-09-16
Grant Date 2021-10-12
Owner NITTAN CORPORATION (Japan)
Inventor Lee, Tai Hwan

Abstract

To find compromises in the relationship between the component costs of intake and exhaust valves and the downsizing of an engine and the relationship between the cooling performance and the followability of the intake and exhaust valves and coordinate these conflicting relationships as much as possible. A hollow valve encapsulating coolant having a good cooling function is used as an exhaust valve, which is exposed to a higher temperature environment than an the intake valve, to eliminate a disincentive to downsizing. In contrast, a hollow valve that has no coolant, relatively low component cost, light weight, and good followability is used as the intake valve, which does not need to have a better cooling function than the exhaust valve and needs to have better followability than the exhaust valve to improve combustion efficiency.

IPC Classes  ?

  • F01L 3/12 - Cooling of valves
  • F01P 3/14 - Arrangements for cooling other engine or machine parts for cooling intake or exhaust valves
  • F01L 3/14 - Cooling of valves by means of a liquid or solid coolant, e.g. sodium, in a closed chamber in a valve

11.

Method for manufacturing engine poppet valve

      
Application Number 17317773
Grant Number 11536167
Status In Force
Filing Date 2021-05-11
First Publication Date 2021-09-02
Grant Date 2022-12-27
Owner NITTAN CORPORATION (Japan)
Inventor
  • Kunitake, Koji
  • Sato, Daiki
  • Sasagawa, Yuki

Abstract

At a diameter-decreasing operation during manufacture of a poppet valve, an intermediate stem portion at which a valve head portion and an intermediate stem portion are made integral by way of a neck portion may be inserted between/among diameter-decreasing tools. Application of compressive forces from compressing surfaces of the diameter-decreasing tools may cause a part of the intermediate stem portion to be decreased in diameter and may cause a main body portion of a first stem portion to be formed and may cause formation of a stepped portion which is continuous with the main body portion, and formation, by an absence of decrease in diameter, of a second stem portion which is broader in girth than the main body portion and which is continuous with the neck portion and which is also continuous with the main body portion by way of the stepped portion.

IPC Classes  ?

  • F01L 3/20 - Shapes or constructions of valve members, not provided for in preceding subgroups of this group
  • B21K 1/22 - Making machine elements valve parts poppet valves, e.g. for internal-combustion engines

12.

Method of manufacturing engine valve intermediate product with boss portion

      
Application Number 17239692
Grant Number 11285570
Status In Force
Filing Date 2021-04-26
First Publication Date 2021-08-12
Grant Date 2022-03-29
Owner NITTAN CORPORATION (Japan)
Inventor
  • Ichimiya, Atsuyuki
  • Kurahashi, Kazunori

Abstract

A method of manufacturing an engine valve intermediate product with a boss portion formed in integral fashion at an outer circumferential surface at an intermediate location on a stem forming portion. The manufacturing method may comprise a stem retaining operation in which an intermediate location of the stem forming portion is retained by a plurality of intermediate jigs removably installable radially with respect to a center of the stem forming portion, and a base end portion is retained by a base end jig. The manufacturing method may further comprise a stem enlarging operation in which compressive forces are applied from both ends of the intermediate product and the boss portion is formed as the intermediate product is made to rotate and alternating loads that cause tensile forces and compressive forces to act in repeated and alternating fashion at the outer circumferential surface of the stem forming portion are applied.

IPC Classes  ?

  • B23P 15/00 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
  • B21J 5/08 - Upsetting

13.

Reduction gear

      
Application Number 17273501
Grant Number 12158195
Status In Force
Filing Date 2019-08-02
First Publication Date 2021-07-08
Grant Date 2024-12-03
Owner NITTAN CORPORATION (Japan)
Inventor
  • Kameda, Michihiro
  • Horiuchi, Yasuhiro

Abstract

A reduction gear W1 that is configured to reduce a rotation speed input to an input shaft 1, and output the reduced rotation speed from an output shaft, the reduction gear including: an inner trochoid 8 that has a wavy curved surface formed on an inner circumferential side surface thereof; an inner trochoid holder 9 that is designed to hold the inner trochoid 8; an outer trochoid 3 that has a wavy curved surface formed on an outer circumferential side surface thereof; a rotation restriction unit that is designed to restrict rotation of the outer trochoid 3 around an axis thereof; and an output pin 9 that is pinched between the outer circumferential side surface of the outer trochoid 3 and the inner circumferential side surface of the inner trochoid 8.

IPC Classes  ?

  • F16H 1/32 - Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
  • B60K 17/04 - Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing
  • B60K 7/00 - Disposition of motor in, or adjacent to, traction wheel

14.

Hollow exhaust poppet valve

      
Application Number 17026175
Grant Number 11300018
Status In Force
Filing Date 2020-09-19
First Publication Date 2021-01-07
Grant Date 2022-04-12
Owner NITTAN CORPORATION (Japan)
Inventor
  • Kunitake, Koji
  • Hasegawa, Jin
  • Sasagawa, Yuki

Abstract

In a hollow exhaust poppet valve including a fillet increasing in diameter toward a leading end, a stem, and a head and having a coolant within a hollow part formed from the head to the stem, the stem includes a first stem part on a base end side, and a second stem part integrated with the first stem part via a step part and integrated with the fillet, and the hollow part includes a first hollow part formed inside the first stem part, and a second hollow part formed inside the second stem part, the fillet, and the head in such fashion as to have a constant inner diameter greater than the first hollow part and formed so as to be continuous with the first hollow part via a tapered part or a curved part.

IPC Classes  ?

  • F01P 1/08 - Arrangements for cooling other engine or machine parts for cooling intake or exhaust valves
  • F01L 3/14 - Cooling of valves by means of a liquid or solid coolant, e.g. sodium, in a closed chamber in a valve
  • F01L 3/06 - Valve members or valve seats with means for guiding or deflecting the medium controlled thereby, e.g. producing a rotary motion of the drawn-in cylinder charge
  • F02F 1/24 - Cylinder heads

15.

Chuck device

      
Application Number 16340871
Grant Number 10799957
Status In Force
Filing Date 2016-12-05
First Publication Date 2019-08-08
Grant Date 2020-10-13
Owner NITTAN CORPORATION (Japan)
Inventor Okuno, Takehiro

Abstract

A machining apparatus capable of drilling a long workpiece from an end surface of a diameter-expanded part and drilling a short workpiece from an end surface of a stem part without inverting orientation of a collet and a sleeve in a chuck device is provided, as well as a method of using the same, and a chuck device for the machining apparatus. A deep hole drilling machine and a chuck device are included with a sleeve and a collet included inside the chuck device, and the collet and the sleeve each have both end openings opened toward the outside of the chuck device. The opening on one end side of each of the sleeve and the collet is directed to the deep hole drilling machine, and the collet is disposed on the other end side of the sleeve.

IPC Classes  ?

  • B23B 31/20 - Longitudinally-split sleeves, e.g. collet chucks
  • B23B 41/02 - Boring or drilling machines or devices specially adapted for particular workAccessories specially adapted therefor for boring deep holesTrepanning, e.g. of gun or rifle barrels

16.

Friction welding method and friction welding apparatus

      
Application Number 16271831
Grant Number 11298776
Status In Force
Filing Date 2019-02-10
First Publication Date 2019-06-06
Grant Date 2022-04-12
Owner NITTAN CORPORATION (Japan)
Inventor Onose, Ryo

Abstract

A friction welding method comprises causing an end surface of a first workpiece and an end surface of a second workpiece to engage in relative rotation while the end surfaces are in mutual contact as a compressive load is applied thereto so as to generate heat due to friction at a joint interface between the workpieces, thereafter stopping the relative rotation of the workpieces, and then applying an upset process pressure to the workpieces. When the workpiece end surfaces are brought into mutual contact, a compressive load employed is less than a lower threshold of a bend-producing compressive load domain within which bending of the first workpiece and/or the second workpiece would occur but the compressive load and the relative rotational speed between the workpieces are such as will cause the heat due to friction to be capable of causing plastic deformation at workpiece end surface(s).

IPC Classes  ?

  • B23K 20/00 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
  • B23K 20/12 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by frictionFriction welding
  • B23K 20/227 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded with ferrous layer
  • B23K 20/24 - Preliminary treatment
  • B23K 103/04 - Steel alloys
  • B23K 103/18 - Dissimilar materials
  • B23K 101/06 - Tubes
  • B23K 101/00 - Articles made by soldering, welding or cutting

17.

Method for filling with metallic sodium

      
Application Number 16072617
Grant Number 10710153
Status In Force
Filing Date 2016-01-29
First Publication Date 2019-01-31
Grant Date 2020-07-14
Owner NITTAN CORPORATION (Japan)
Inventor
  • Uchida, Shigeru
  • Onose, Ryo
  • Homma, Koichi
  • Miura, Kuniaki
  • Hanawa, Masashige

Abstract

Provided is a method for filling a stem-side hollow area of an engine valve with metallic sodium. The method includes injecting melted metallic sodium into a cylinder having a larger diameter than an inner diameter of the hollow area of the engine valve, forming a solidified metallic sodium rod having a substantially uniform structure in the cylinder, inserting the metallic sodium into the hollow area of the engine valve through a nozzle having a small diameter, and sealing the engine valve.

IPC Classes  ?

  • B22D 23/00 - Casting processes not provided for in groups
  • B22D 27/00 - Treating the metal in the mould while it is molten or ductile
  • F01L 3/14 - Cooling of valves by means of a liquid or solid coolant, e.g. sodium, in a closed chamber in a valve
  • B21K 1/22 - Making machine elements valve parts poppet valves, e.g. for internal-combustion engines
  • C22B 26/10 - Obtaining alkali metals
  • B22D 23/06 - Melting-down metal, e.g. metal particles, in the mould
  • F01L 3/24 - Safety means or accessories, not provided for in preceding subgroups of this group
  • B22D 17/00 - Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
  • F01L 3/02 - Selecting particular materials for valve members or valve seatsValve members or valve seats composed of two or more materials

18.

Highly-viscous substance dispensing method and highly-viscous substance dispensing apparatus

      
Application Number 15542607
Grant Number 10252307
Status In Force
Filing Date 2015-05-15
First Publication Date 2018-09-20
Grant Date 2019-04-09
Owner NITTAN CORPORATION (Japan)
Inventor
  • Homma, Koichi
  • Niiro, Masaaki
  • Sato, Daiki

Abstract

Each time a highly-viscous substance is extruded, a variation in weight of each cut piece of the highly-viscous substance is minimized. Metallic sodium (5) loaded in an extruder main body (3) is extruded from a nozzle (7) of the extruder main body (3) with a pressing tool (4) and, when it is detected that the metallic sodium (5) is extruded to a predetermined position, the movement of the pressing tool (4) is stopped and the extruded metallic sodium (5) is cut. In this case, an impulse (P) after stop is brought closer to a constant value until a load no longer acts on the metallic sodium (5) in the extruder main body (3) after stopping the movement of the pressing tool (4) by adjusting the movement speed of the pressing tool (4).

IPC Classes  ?

  • B21C 23/21 - Presses specially adapted for extruding metal
  • B21C 31/00 - Control devices for metal extruding, e.g. for regulating the pressing speed or temperature of metalMeasuring devices, e.g. for temperature of metal, combined with or specially adapted for use in connection with extrusion presses
  • F01L 3/14 - Cooling of valves by means of a liquid or solid coolant, e.g. sodium, in a closed chamber in a valve
  • F01L 3/24 - Safety means or accessories, not provided for in preceding subgroups of this group
  • B23P 15/00 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass

19.

Method and apparatus for flaw inspection of friction-weld part of stem in engine valve

      
Application Number 15887986
Grant Number 10473622
Status In Force
Filing Date 2018-02-03
First Publication Date 2018-06-07
Grant Date 2019-11-12
Owner NITTAN CORPORATION (Japan)
Inventor
  • Abe, Yuichi
  • Uchida, Shigeru
  • Takahashi, Osamu

Abstract

Provided is a method for flaw inspection of a stem joint of a valve including: an internal flaw inspection step including causing a flaw detection probe to be disposed so as to face upward in water in a tank in an ultrasonic inspection chamber, holding a valve in such fashion as to cause the tip to face the flaw detection probe, and inspecting for a flaw at the interior of the stem joint; and a surface flaw inspection step including causing a flaw detection probe to be disposed horizontally in an eddy-current inspection chamber, holding a valve in such fashion as to cause the side face of a stem of the valve to be close to and facing the flaw detection probe, inspecting for a flaw on the surface of the stem joint while the flaw detection probe and the valve are made to engage in mutual rotation. The valves are transferred from a valve loading position to the ultrasonic inspection chamber, from the ultrasonic inspection chamber to the eddy-current inspection chamber, and from the eddy-current inspection chamber to a valve unloading position in substantially simultaneous, continuous, synchronous, and/or coordinated fashion.

IPC Classes  ?

  • G01N 27/72 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
  • G01N 27/90 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
  • G01N 29/27 - Arrangements for orientation or scanning by moving the material relative to a stationary sensor
  • G01N 29/04 - Analysing solids
  • G01N 29/28 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic wavesVisualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object Details providing acoustic coupling
  • G01N 29/22 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic wavesVisualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object Details

20.

Method for purifying metallic sodium

      
Application Number 15564332
Grant Number 10316390
Status In Force
Filing Date 2016-01-29
First Publication Date 2018-05-24
Grant Date 2019-06-11
Owner NITTAN CORPORATION (Japan)
Inventor
  • Uchida, Shigeru
  • Onose, Ryo
  • Homma, Koichi
  • Miura, Kuniaki
  • Hanawa, Masashige

Abstract

It is preferable that metallic sodium to be loaded to an engine valve used for an internal combustion engine such as automobile engine have high purity. However, conventionally, an organic solvent remaining in micropores on a surface of the metallic sodium have been hardly attracted attention. Provided is a method for purifying metallic sodium including steps of placing metallic sodium containing organic solvent in the micropores thereof in a melting tank which is sealed, and heating the melting tank under reduced pressure to vaporize and remove the organic solvent coating the metallic sodium.

IPC Classes  ?

  • B01D 8/00 - Cold trapsCold baffles
  • C22B 9/02 - Refining by liquating, filtering, centrifuging, distilling or supersonic wave action
  • C23G 5/00 - Cleaning or de-greasing metallic material by other methodsApparatus for cleaning or de-greasing metallic material with organic solvents
  • B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
  • C22B 26/10 - Obtaining alkali metals
  • C22B 5/16 - Dry processes with volatilisation or condensation of the metal being produced
  • C22B 9/00 - General processes of refining or remelting of metalsApparatus for electroslag or arc remelting of metals
  • F01L 3/14 - Cooling of valves by means of a liquid or solid coolant, e.g. sodium, in a closed chamber in a valve

21.

Cutting apparatus and cutting blade

      
Application Number 15540930
Grant Number 10569318
Status In Force
Filing Date 2016-02-15
First Publication Date 2018-04-19
Grant Date 2020-02-25
Owner NITTAN CORPORATION (Japan)
Inventor
  • Takahashi, Masaharu
  • Ohyou, Kazuhiro

Abstract

A cutting apparatus and a cutting blade is capable of restraining a highly-viscous substance from bending while preventing damage to a blade edge part. A pair of the cutting blades are configured for an approaching/separating movement, and the cutting blades are arranged with blade edge parts facing each other while having thickness directions oriented in the same direction. The cutting blades each have a gradually increasing thickness increased from a blade edge leading end toward a blade root part and have blade edge parts that are offset from one another in the thickness direction of the cutting blades. Each of the cutting blades has a surface in the thickness direction made of a material having a hardness lower than the blade edge part of the other cutting blade.

IPC Classes  ?

  • B21C 35/02 - Removing or drawing-off work
  • B26D 1/09 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type with a plurality of cutting members
  • B26D 3/00 - Cutting work characterised by the nature of the cut madeApparatus therefor
  • B26D 1/08 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type
  • B26D 1/00 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting members therefor

22.

Torque transmission device

      
Application Number 15560384
Grant Number 10451162
Status In Force
Filing Date 2015-09-29
First Publication Date 2018-03-08
Grant Date 2019-10-22
Owner NITTAN CORPORATION (Japan)
Inventor
  • Furukawa, Takuya
  • Kameda, Michihiro

Abstract

The torque transmission device includes side gears having a same axis of rotation coupled to rear wheels, a case disposed around the outer circumferential side of the side gears, and rotating around the axis of the side gears, and a pinion gear rotatably supported by the case and engaged with the side gears in a straddling manner. The side gears are spur gears having a different number of teeth, and the pinion gear is a spur gear driven by a motor and having an axis of rotation that is parallel to the axis of rotation of the side gears. Forming the side gears and pinion gear from spur gears advantageously allows the side gears to be compactly arranged along their axis of rotation.

IPC Classes  ?

  • F16H 48/36 - Differential gearings characterised by intentionally generating speed difference between outputs
  • F16H 48/24 - Arrangements for suppressing or influencing the differential action, e.g. locking devices using positive clutches or brakes
  • F16H 48/34 - Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means using electromagnetic or electric actuators
  • F16H 59/38 - Inputs being a function of speed of gearing elements
  • F16H 48/20 - Arrangements for suppressing or influencing the differential action, e.g. locking devices
  • F16H 59/40 - Output shaft speed
  • F16H 59/58 - Inputs being a function of the status of the machine, e.g. position of doors or safety belts dependent on signals from the steering

23.

Method for supplying inert gas into poppet valve intermediate and apparatus for supplying inert gas into poppet valve intermediate

      
Application Number 15504845
Grant Number 09840948
Status In Force
Filing Date 2015-10-28
First Publication Date 2017-09-28
Grant Date 2017-12-12
Owner NITTAN CORPORATION (Japan)
Inventor
  • Yokoyama, Hisanaga
  • Uchida, Shigeru

Abstract

A method and an apparatus for supplying inert gas into a poppet valve intermediate are provided that are capable of properly filling the inert gas without waste into the poppet valve intermediate of any size. After a negative pressure is achieved by suction in an internal space (Win) of a poppet valve intermediate (W) as compared to an ambient pressure (Pa) of the poppet valve intermediate (W), the inert gas is supplied into the internal space (Win) until a pressure (F) of the internal space (Win) reaches the ambient pressure (Ps) of the poppet valve intermediate (W).

IPC Classes  ?

  • F01L 3/14 - Cooling of valves by means of a liquid or solid coolant, e.g. sodium, in a closed chamber in a valve
  • B21K 1/22 - Making machine elements valve parts poppet valves, e.g. for internal-combustion engines
  • B23P 15/00 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
  • F16K 49/00 - Means in or on valves for heating or cooling

24.

Hydraulic lash adjuster and method for using hydraulic lash adjuster

      
Application Number 15501390
Grant Number 10352203
Status In Force
Filing Date 2014-09-17
First Publication Date 2017-08-03
Grant Date 2019-07-16
Owner NITTAN CORPORATION (Japan)
Inventor Ozawa, Hiroyuki

Abstract

Air is restrained from flowing into a high pressure chamber while the number of parts is reduced. A plunger is slidably fitted into a body; a reservoir is formed in the plunger with a communication hole formed in a head section thereof to allow communication between an inside and an outside; a high pressure chamber is formed in the body between the body and the plunger bottom section; an oil supply hole is formed in a plunger circumferential wall section; a return spring is interposed between the body and the plunger; a valve mechanism is disposed on the plunger bottom section; the reservoir is set such that a space continuously extends; and the oil supply hole is oriented outward in the radial direction as compared to an axis of the plunger.

IPC Classes  ?

  • F01L 1/24 - Adjusting or compensating clearance, i.e. lash adjustment automatically by fluid means, e.g. hydraulically
  • F01L 1/245 - Hydraulic tappets
  • F01L 1/255 - Hydraulic tappets between cam and rocker arm
  • F01L 1/20 - Adjusting or compensating clearance, i.e. lash adjustment

25.

Poppet valve and method for manufacturing same

      
Application Number 15425028
Grant Number 10473002
Status In Force
Filing Date 2017-02-06
First Publication Date 2017-07-27
Grant Date 2019-11-12
Owner
  • NITTAN CORPORATION (Japan)
  • NITTAN CORPORATION (Japan)
Inventor
  • Mikami, Maiku
  • Kurahashi, Kazunori

Abstract

a of the pressing protrusions 15 is located in a normal direction X2 of the seat surface N, which is positioned on a normal line X2 passing a reference point P3 set on a line segment K connecting a base point P1 in an inner side and a base point P2 in an outer side of the seat surface N; a position of the reference point P3 is set such that a relation between a length L1 from the base point P1 to the reference point P3 and a length L2 from the base point P2 to the reference point P3 meets a formula of L1/L2≤0.5.

IPC Classes  ?

  • B23P 15/00 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
  • F01L 3/20 - Shapes or constructions of valve members, not provided for in preceding subgroups of this group
  • B21K 1/22 - Making machine elements valve parts poppet valves, e.g. for internal-combustion engines
  • F01L 3/02 - Selecting particular materials for valve members or valve seatsValve members or valve seats composed of two or more materials
  • C21D 7/02 - Modifying the physical properties of iron or steel by deformation by cold working
  • C21D 7/13 - Modifying the physical properties of iron or steel by deformation by hot working
  • C21D 9/00 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor

26.

Hydraulic lash adjuster

      
Application Number 15306432
Grant Number 09739181
Status In Force
Filing Date 2014-12-09
First Publication Date 2017-02-16
Grant Date 2017-08-22
Owner NITTAN CORPORATION (Japan)
Inventor Ozawa, Hiroyuki

Abstract

A hydraulic lash adjuster having a reduced number of elements, yet capable of suppressing air from infusing into a high-pressure chamber. A plunger is fitted in a body. A reservoir is formed in the plunger. The plunger's head portion is formed with a communication hole for communicating its interior with its exterior. A high-pressure chamber is disposed and between the plunger and the body. An oil supply hole is formed in the peripheral wall of the plunger. A return spring is provided between the body and the plunger. A valve mechanism is provided at the plunger's bottom. Provided on the inner periphery of the plunger is an inclined area, subjected to impingement of oil jet ji and serving as an impingement area, such that the impingement area is inclined to fall in the direction of the ejected oil as the area nears the plunger's head portion.

IPC Classes  ?

  • F01L 1/14 - TappetsPush-rods
  • F01L 1/245 - Hydraulic tappets
  • F01L 1/24 - Adjusting or compensating clearance, i.e. lash adjustment automatically by fluid means, e.g. hydraulically

27.

Hollow poppet valve

      
Application Number 15114460
Grant Number 09790822
Status In Force
Filing Date 2014-02-10
First Publication Date 2016-12-08
Grant Date 2017-10-17
Owner NITTAN CORPORATION (Japan)
Inventor
  • Tsuneishi, Osamu
  • Inoue, Masaaki

Abstract

With a poppet valve using a coolant, maximum combustion efficiency is realized by adjusting relative values of a heat insulation effect and a heat dissipation effect. From the inside of a head portion (14) to a stem portion (12) of a hollow poppet valve (10) a heat insulating space (S1) and a cooling portion (S2) loaded with a coolant (19), separated from each other by a partition (15), are formed. By properly setting an installation position and a vertical length of the partition (15) according to a type of vehicle for which the valve is used, appropriate heat insulation effect and heat dissipation effect are obtained. Further, by the partition (15), mechanical or thermal strength of the poppet valve in which the heat insulating space (S1) and the cooling portion (S2) are formed is increased.

IPC Classes  ?

  • F01L 3/02 - Selecting particular materials for valve members or valve seatsValve members or valve seats composed of two or more materials
  • F01L 3/14 - Cooling of valves by means of a liquid or solid coolant, e.g. sodium, in a closed chamber in a valve
  • B21K 1/22 - Making machine elements valve parts poppet valves, e.g. for internal-combustion engines
  • F16K 27/02 - Construction of housingsUse of materials therefor of lift valves
  • F16K 49/00 - Means in or on valves for heating or cooling
  • B23P 15/00 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass

28.

Assembly of internal combustion engine valve and valve seat

      
Application Number 15108470
Grant Number 10287933
Status In Force
Filing Date 2014-12-17
First Publication Date 2016-11-10
Grant Date 2019-05-14
Owner NITTAN CORPORATION (Japan)
Inventor
  • Ikemi, Satoshi
  • Oshige, Hiroshi
  • Suwa, Kiyoshi
  • Sato, Kenichi
  • Kunitake, Kouji
  • Yoshino, Ryouichi

Abstract

In an assembly of a hollow poppet valve and a valve seat insert, the hollow poppet valve's head is integrally formed with a stem end, a hollow part is formed from the head to a stem, and coolant is filled into the hollow part along with an inert gas. The valve seat insert is formed of iron base sintered alloy and obtained by integrating two layers of a supporting material side layer and a valve contact face side layer. The hollow poppet valve is formed of a material having thermal conductivity of 5-45 (W/m·K) at 20-1000° C. The valve seat insert includes the supporting material side layer having thermal conductivity of 23-50 (W/m·K) at 20-300° C. and a valve contact face side layer having thermal conductivity of 10-22 (W/m·K) at 20-300° C. This enables a valve temperature decrease throughout an engine's entire RPM range compared with the prior art.

IPC Classes  ?

  • B22F 7/02 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite layers
  • B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
  • F01L 3/02 - Selecting particular materials for valve members or valve seatsValve members or valve seats composed of two or more materials
  • F01L 3/04 - Coated valve members or valve seats
  • F01L 3/14 - Cooling of valves by means of a liquid or solid coolant, e.g. sodium, in a closed chamber in a valve
  • F01L 3/18 - Liquid cooling of valve
  • F01L 3/20 - Shapes or constructions of valve members, not provided for in preceding subgroups of this group
  • F01L 3/22 - Valve seats not provided for in preceding subgroups of this groupFixing of valve seats
  • C22C 33/02 - Making ferrous alloys by powder metallurgy
  • C22C 38/00 - Ferrous alloys, e.g. steel alloys
  • C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
  • C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
  • C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
  • C22C 38/46 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
  • C22C 38/52 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt

29.

Method of manufacturing a hollow poppet valve

      
Application Number 15035955
Grant Number 09751164
Status In Force
Filing Date 2013-11-21
First Publication Date 2016-09-08
Grant Date 2017-09-05
Owner NITTAN CORPORATION (Japan)
Inventor
  • Ishii, Kazuhiro
  • Uchida, Shigeru
  • Meguro, Masahiro

Abstract

A hollow poppet valve has an internal cavity which extends from within its valve head into a valve stem portion and is partly filled with a coolant. A manufacturing method includes forming a coolant rod by cutting clayish coolant to a coolant rod of a predetermined length from the coolant material extruded from an extruder; a coolant-rod insertion step in which a coolant rod is inserted into a cavity formed in an intermediate valve product through its opening; and a step of sealing the opening of the hole. In the coolant-rod insertion step, coolant-rods are inserted into the cavity separately in multiple times. Since each coolant rod is short, it is little deformed or bent, so that it has little interference with the inner periphery of the cavity, which permits use of a thick rod and increase the amount of the coolant in the cavity.

IPC Classes  ?

  • B23P 15/00 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
  • F01L 3/14 - Cooling of valves by means of a liquid or solid coolant, e.g. sodium, in a closed chamber in a valve
  • B21K 1/22 - Making machine elements valve parts poppet valves, e.g. for internal-combustion engines
  • F01L 3/08 - Valve guidesSealing of valve stem, e.g. sealing by lubricant

30.

DLC film coating and coated valve lifter

      
Application Number 14772030
Grant Number 09657384
Status In Force
Filing Date 2013-03-22
First Publication Date 2016-01-21
Grant Date 2017-05-23
Owner NITTAN CORPORATION (Japan)
Inventor
  • Kubota, Yukio
  • Ishii, Shinichi

Abstract

The present invention provides a DLC (diamond like carbon) film coating and a coated valve lifter, wherein the DLC film coating can be formed at a film forming rate comparable with that achieved in the case of forming the DLC coating film by the CVD (chemical vapor deposition) method and has good durability comparable with that obtained in the case of forming the DLC film coating by the sputtering film forming method. The DLC film coating includes an intermediate layer 3 deposited on the surface of a base substrate and a DLC layer 4 deposited on the intermediate layer 3. The intermediate layer 3 is formed of metal carbide or metal capable of forming a hard surface and the DLC layer 4 is formed by adding a common metal element to that contained in the intermediate layer 3 thereto while inert gas containing hydrocarbon gas is being introduced. As a result, the intermediate layer 3 and the DLC layer 4 can be formed by sequential sputtering processing and in addition, an H (hydrogen) content contained in the DLC layer 4 can be adjusted by forming a Me-DLC (metal addition DLC) layer as a DLC layer 4.

IPC Classes  ?

  • C23C 16/26 - Deposition of carbon only
  • C23C 14/06 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
  • C23C 16/02 - Pretreatment of the material to be coated
  • C23C 14/02 - Pretreatment of the material to be coated
  • F01L 3/04 - Coated valve members or valve seats

31.

Workpiece inspection equipment

      
Application Number 14352450
Grant Number 09340372
Status In Force
Filing Date 2013-01-30
First Publication Date 2015-11-19
Grant Date 2016-05-17
Owner NITTAN CORPORATION (Japan)
Inventor
  • Makino, Yosuke
  • Okamura, Yuji
  • Oda, Hiroyuki

Abstract

To provide workpiece inspection equipment that allows increasing inspection items without increasing the installation space of the inspection equipment as a whole by disposing a plurality of inspection stages around a rotating table for workpiece feeding. Workpiece inspection equipment 20 including a rotating table 21 for workpiece feeding which intermittently rotates with workpiece housing portions 22 provided at a plurality of circumferentially equally divided positions, a workpiece carry-in stage S0 and a workpiece carry-out stage S6 provided at predetermined positions separated in the circumferential direction of the rotating table 21, and a plurality of inspection stages S1 to S5 provided at predetermined circumferential positions of the rotating table between both stages S0 and S6, in which by increasing the number of workpiece housing portions 22 to be provided in the rotating table 21, the number of inspection stages can be increased without increasing the rotating table 21 in diameter.

IPC Classes  ?

  • B65G 47/84 - Star-shaped wheels or devices having endless travelling belts or chains, the wheels or devices being equipped with article-engaging elements
  • B65G 47/90 - Devices for picking-up and depositing articles or materials
  • B65G 47/51 - Devices for discharging articles or materials from conveyors with distribution, e.g. automatically, to desired points according to unprogrammed signals, e.g. influenced by supply situation at destination
  • B65G 47/91 - Devices for picking-up and depositing articles or materials incorporating pneumatic, e.g. suction, grippers
  • G01B 5/00 - Measuring arrangements characterised by the use of mechanical techniques
  • G01B 5/02 - Measuring arrangements characterised by the use of mechanical techniques for measuring length, width, or thickness
  • F01L 3/00 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing facesParts or accessories thereof
  • B23P 15/00 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass

32.

Poppet valve with a formed seat, and method of making

      
Application Number 14788086
Grant Number 09371915
Status In Force
Filing Date 2015-06-30
First Publication Date 2015-10-22
Grant Date 2016-06-21
Owner NITTAN CORPORATION (Japan)
Inventor
  • Mikami, Maiku
  • Kurahashi, Kazunori

Abstract

A method of forming a poppet valve having a stem, a valve head and a valve seat while concurrently maintaining compressive residual stress without grain coarsening on both the valve body and the valve seat. The method includes forming a rounded cladded part on the valve head of the poppet valve by welding and forming a valve seat surface at a predetermined aperture angle and cutting the cladded part to form a smooth surface which is subjected to uniform contact pressure at a temperature less than the recrystallization temperature of the base material or cladding material, whichever is lower, to enhance the durability of the valve seat.

IPC Classes  ?

  • F16K 1/42 - Valve seats
  • B21K 1/22 - Making machine elements valve parts poppet valves, e.g. for internal-combustion engines
  • F01L 3/04 - Coated valve members or valve seats
  • B23P 15/00 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
  • F01L 3/00 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing facesParts or accessories thereof

33.

Engine valve

      
Application Number 14439149
Grant Number 09334977
Status In Force
Filing Date 2012-10-30
First Publication Date 2015-10-15
Grant Date 2016-05-10
Owner NITTAN CORPORATION (Japan)
Inventor
  • Yokoyama, Hisanaga
  • Iio, Masanami

Abstract

[Problem] To provide an engine valve which satisfies predetermined characteristics with respect to impact resistance, abrasion resistance and high-temperature corrosion resistance all of which meet or exceed predetermined levels required to resist severe use environments, while also minimizing the content ratios of predetermined rare metals. [Means for Solving the Problem] An engine valve is configured to include an engine valve base body having a stem portion and a head portion provided at one end portion of the stem portion, which engine valve comprises: a build-up portion formed by seat welding to encircle the head portion; and a seat obtained by forming a surface-hardened layer on the build-up portion, wherein the build-up portion is formed of a seat weld material constituted of a Ni—Fe—Cr alloy containing W at 8.0 to 40.0 mass %, Mo at a total together with W in a range of 20.0 to 40.0 mass %, Fe at 20.0 to 50.0 mass %, Cr at 12.0 to 36.0 mass %, B at 1.0 to 2.5 mass %, and a balance of Ni and inevitable impurities, and wherein the surface-hardened layer is formed by effecting nitriding treatment on the entire valve to form a nitride layer on a machined surface formed on the seat, thereby ensuring predetermined characteristic while minimizing rare metal content ratio.

IPC Classes  ?

  • C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
  • C23C 8/48 - Nitriding
  • F16K 25/00 - Details relating to contact between valve members and seats
  • F01L 3/04 - Coated valve members or valve seats
  • C23C 8/24 - Nitriding
  • C23C 8/28 - Solid state diffusion of only non-metal elements into metallic material surfacesChemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in one step
  • C23C 8/36 - Solid state diffusion of only non-metal elements into metallic material surfacesChemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases using ionised gases, e.g. ionitriding
  • C23C 8/56 - Carbo-nitriding of ferrous surfaces
  • F01L 3/02 - Selecting particular materials for valve members or valve seatsValve members or valve seats composed of two or more materials

34.

Ni-Cr-Co-based alloy having high-temperature corrosion resistance, and poppet valve surface-modified with the same

      
Application Number 14438959
Grant Number 09441287
Status In Force
Filing Date 2013-10-08
First Publication Date 2015-10-08
Grant Date 2016-09-13
Owner NITTAN CORPORATION (Japan)
Inventor
  • Otobe, Katsunori
  • Nishimura, Shinichi
  • Kurahashi, Kazunori
  • Takahashi, Yoshihiro

Abstract

There is provided a surface-coating material having excellent cracking resistance and peeling resistance, and having excellent high-temperature corrosion resistance properties; and a poppet valve coated with the surface-coating material. The Ni—Cr—Co-based alloy comprises 40.0 to 50.0 mass % of Cr, 10.0 to 20.0 mass % of Co, 0.5 to 5.0 mass % of Nb, 0.01 to 5.0 mass % of Fe and 0.1 to 3.0 mass % of Si, with the remainder being 26.0 to 40.0 mass % of Ni and unavoidable impurities. The Ni—Cr—Co-based alloy may additionally comprise one or more elements selected from Mo, W, Mn, Ti, Al, B and C in a total amount of 5.0 mass % or less. The content of each of Ti and Al is 3.0 mass % or less and the content of each of B and C is 1.0 mass % or less. In the poppet valve, at least a face portion is coated with the Ni—Cr—Co-based alloy.

IPC Classes  ?

  • C22C 30/00 - Alloys containing less than 50% by weight of each constituent
  • C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
  • C22C 27/06 - Alloys based on chromium
  • F01L 3/04 - Coated valve members or valve seats
  • F16K 25/00 - Details relating to contact between valve members and seats
  • F16K 27/00 - Construction of housingsUse of materials therefor

35.

Bar material transfer method and conveyor

      
Application Number 14437098
Grant Number 10029298
Status In Force
Filing Date 2013-03-27
First Publication Date 2015-09-24
Grant Date 2018-07-24
Owner NITTAN CORPORATION (Japan)
Inventor
  • Shimizu, Takahiro
  • Endoh, Shinya
  • Takahashi, Osamu

Abstract

A chuck device in a robot hand is used when receiving a primary formed workpiece from electrode chucks. After receiving the primary formed workpiece, and before inserting the primary formed workpiece from its shaft stem part into an insertion hole in a forging press main body, a portion held by the electrode chucks of the primary formed workpiece is gripped by a chuck device different from the chuck device, to release the gripping of the primary formed workpiece by the chuck device. Therefore, it is possible to insert the holding portion held by the electrode chucks from the side of the shaft stem part of the primary formed workpiece into the insertion hole. Thereby providing a bar material transfer method capable of accurately inserting the bar material from its one end into a predetermined positioning hole even if a bar material serving as a workpiece is short.

IPC Classes  ?

  • B21J 13/10 - Manipulators
  • B21K 27/02 - Feeding devices for rods, wire, or strips
  • B21K 1/22 - Making machine elements valve parts poppet valves, e.g. for internal-combustion engines
  • B21K 1/20 - Making machine elements valve parts

36.

Hollow poppet valve

      
Application Number 14431657
Grant Number 09689506
Status In Force
Filing Date 2013-03-26
First Publication Date 2015-08-27
Grant Date 2017-06-27
Owner NITTAN CORPORATION (Japan)
Inventor
  • Homma, Koichi
  • Onuma, Hiroki
  • Hasegawa, Jin

Abstract

a) does not influences the thickness of other regions of the valve, it does not degrade durability of the valve.

IPC Classes  ?

  • F01P 1/08 - Arrangements for cooling other engine or machine parts for cooling intake or exhaust valves
  • F01P 1/06 - Arrangements for cooling other engine or machine parts
  • F01L 3/00 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing facesParts or accessories thereof
  • F16K 49/00 - Means in or on valves for heating or cooling
  • F01L 3/14 - Cooling of valves by means of a liquid or solid coolant, e.g. sodium, in a closed chamber in a valve
  • F01L 3/16 - Cooling of valves by means of a fluid flowing through or along valve, e.g. air
  • F16K 1/12 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with streamlined valve member around which the fluid flows when the valve is opened
  • F01L 3/20 - Shapes or constructions of valve members, not provided for in preceding subgroups of this group
  • F16K 1/32 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces Details
  • B21K 1/22 - Making machine elements valve parts poppet valves, e.g. for internal-combustion engines
  • B23P 15/00 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass

37.

Ni—Fe—Cr alloy and engine valve welded with the same alloy

      
Application Number 14115268
Grant Number 09340856
Status In Force
Filing Date 2012-10-15
First Publication Date 2015-06-04
Grant Date 2016-05-17
Owner NITTAN CORPORATION (Japan)
Inventor
  • Otobe, Katsunori
  • Nishimura, Shinichi
  • Nakagawa, Kenji
  • Iio, Masanami

Abstract

A hard-facing alloy having impact resistance, wear resistance and hot corrosion resistance and containing Fe which is a bountiful resource and inexpensive is provided. Provided are: a Ni—Fe—Cr alloy containing 0 to 20.0 mass % of Mo, 8.0 to 40.0 mass % of W, 20.0 to 40.0 mass % of a total amount of Mo and W, 20.0 to 50.0 mass % of Fe, 12.0 to 36.0 mass % of Cr and 1.0 to 2.5 mass % of B, and the remainder being Ni and unavoidable impurities; and an engine valve welded with the same alloy. The above Ni—Fe—Cr alloy can further contain 15 mass % or less of a total amount of elements selected from Co, Mn, Cu, Si and C, in such cases, 15.0 mass % or less of Co, 5.0 mass % or less of each of Mn and Cu, 2.0 mass % or less of Si and 0.5 mass % or less of C are preferred.

IPC Classes  ?

  • B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
  • C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
  • C22C 38/54 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
  • C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
  • C22C 27/04 - Alloys based on tungsten or molybdenum
  • C22C 30/02 - Alloys containing less than 50% by weight of each constituent containing copper
  • C22C 38/52 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
  • C22C 38/48 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
  • C22C 38/58 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
  • C22C 27/06 - Alloys based on chromium
  • B23K 9/04 - Welding for other purposes than joining, e.g. built-up welding
  • B23K 35/30 - Selection of soldering or welding materials proper with the principal constituent melting at less than 1550°C
  • C23C 4/04 - Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
  • C23C 4/06 - Metallic material
  • C22C 30/00 - Alloys containing less than 50% by weight of each constituent
  • F01L 3/02 - Selecting particular materials for valve members or valve seatsValve members or valve seats composed of two or more materials
  • F01L 3/04 - Coated valve members or valve seats
  • C22C 19/07 - Alloys based on nickel or cobalt based on cobalt
  • B22F 7/08 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
  • B22F 9/08 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
  • C22C 38/42 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
  • C22C 30/04 - Alloys containing less than 50% by weight of each constituent containing tin or lead

38.

Method of friction welding and apparatus of friction welding

      
Application Number 14008477
Grant Number 09446490
Status In Force
Filing Date 2012-07-13
First Publication Date 2015-05-21
Grant Date 2016-09-20
Owner NITTAN CORPORATION (Japan)
Inventor
  • Onose, Ryo
  • Okuno, Takehiro

Abstract

To provide a method of friction welding and an apparatus of friction welding in which a length of time for manufacturing one product is reduced as much as possible regardless of the dimension errors of works. The fast forwarding distance Lx1 is calculated for the fast forwarding by using the results of measuring the dimensions of works W1, W2 under the condition of the constant slowly forwarding distance Lx2, Thereby, for the work of a legitimate dimension and even for the work having a dimension smaller than the legitimate dimension, the elongation of the slowly forwarding distance is prevented compared with the work having the longer dimension than the legitimate dimension, and the relative proportion of the fast forwarding distance Lx1 is increased by making shorter the specified slowly forwarding distance.

IPC Classes  ?

  • B32B 41/00 - Arrangements for controlling or monitoring lamination processesSafety arrangements
  • B23Q 15/22 - Control or regulation of position of tool or workpiece
  • B23Q 15/02 - Control or regulation of feed movement according to the instantaneous size and the required size of the workpiece acted upon
  • B23K 20/12 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by frictionFriction welding
  • B29C 65/06 - Joining of preformed partsApparatus therefor by heating, with or without pressure using friction, e.g. spin welding
  • B29C 65/00 - Joining of preformed partsApparatus therefor

39.

Method of manufacturing a valve for an internal combustion engine

      
Application Number 14348692
Grant Number 08978248
Status In Force
Filing Date 2011-10-14
First Publication Date 2015-01-01
Grant Date 2015-03-17
Owner NITTAN CORPORATION (Japan)
Inventor
  • Kurahashi, Kazunori
  • Mikami, Maiku

Abstract

A method of manufacturing a valve (10) is provided, in which an intermediate valve product having a generally disk-shape valve head is formed by a die unit (20). The valve head is then machined to have a proper thickness and a tapered face on the periphery of the disk-shape valve head. The valve head is repeatedly forged in secondary forging by means of a die unit (40) equipped with a die (42) and a press punch (48) while angularly displacing the tapered face relative to the die (42) through a predetermined angle. Since the die (42) has protruding pressing sections and grooves (46) along the circumference of the die, a uniformly deformed and hardened valve face (16) is formed on the valve head.

IPC Classes  ?

  • B21K 1/22 - Making machine elements valve parts poppet valves, e.g. for internal-combustion engines
  • B23P 15/00 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass

40.

Hollow poppet valve

      
Application Number 14361636
Grant Number 09175788
Status In Force
Filing Date 2012-10-02
First Publication Date 2014-12-04
Grant Date 2015-11-03
Owner NITTAN CORPORATION (Japan)
Inventor
  • Onuma, Hiroki
  • Hasegawa, Jin

Abstract

To provide a hollow poppet valve having an improved heat reduction effect. In a hollow poppet valve (10) having a valve head (14) and a stem (12) integral with the valve head (14), the hollow poppet valve (10) is formed with an internal cavity S that extends in the valve head (14) and the stem (12). The internal cavity S is charged with a coolant (19) and an inert gas. The internal cavity S has a generally disk-shape internal cavity S1 and an internal stem cavity S2 formed in the stem (12) and connected to the internal valve head cavity S1 at a right angle. During a reciprocal motion of the valve (10), a vertical convective flow of coolant (19) along the axis L of the valve (10) is established at least in the internal valve head cavity S1, thereby enhancing its heat reduction effect.

IPC Classes  ?

  • F01L 3/14 - Cooling of valves by means of a liquid or solid coolant, e.g. sodium, in a closed chamber in a valve
  • F16K 49/00 - Means in or on valves for heating or cooling
  • F01L 3/16 - Cooling of valves by means of a fluid flowing through or along valve, e.g. air
  • F16K 1/12 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with streamlined valve member around which the fluid flows when the valve is opened
  • B21K 1/22 - Making machine elements valve parts poppet valves, e.g. for internal-combustion engines
  • B23P 15/00 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass

41.

Engine valve forging system

      
Application Number 14369089
Grant Number 09283615
Status In Force
Filing Date 2011-12-27
First Publication Date 2014-11-27
Grant Date 2016-03-15
Owner NITTAN CORPORATION (Japan)
Inventor
  • Kuriyama, Hideto
  • Osabe, Katsunori
  • Akutagawa, Hiroyuki
  • Ikei, Kenichi
  • Takamune, Hiroaki
  • Shimizu, Yuki

Abstract

An engine valve forging system includes a molding forging die having a circular hole stem molding portion continued to a tip end of a head type molding portion, to mold an engine valve by extrusion-forging a material from the head type molding portion to the stem molding portion by an upper die, and a stem guide forging die which is coaxially disposed to communicate with a tip end of the stem molding portion, and has a guide portion for a stem portion of an engine valve extruded from the stem molding portion, and a plurality of stem curve restraining portions having a shape gradually tapering toward a central shaft line from a rear end portion to a tip end portion are formed continuously along the central shaft line of the guide portion in the guide portion, to be capable of manufacturing high-precision engine valves with less stem curve.

IPC Classes  ?

  • B21K 1/22 - Making machine elements valve parts poppet valves, e.g. for internal-combustion engines
  • F01L 3/00 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing facesParts or accessories thereof
  • B21C 23/18 - Making uncoated products by impact extrusion

42.

Method of manufacturing a valve for an internal combustion engine

      
Application Number 14350205
Grant Number 09015940
Status In Force
Filing Date 2011-10-14
First Publication Date 2014-09-25
Grant Date 2015-04-28
Owner NITTAN CORPORATION (Japan)
Inventor
  • Kurahashi, Kazunori
  • Mikami, Maiku

Abstract

a) in the primary forging while advantageously saving the valve material and reducing thickness adjustment time. In the secondary forging, the hardness of the valve face is further enhanced.

IPC Classes  ?

  • B21K 1/22 - Making machine elements valve parts poppet valves, e.g. for internal-combustion engines
  • F01L 3/20 - Shapes or constructions of valve members, not provided for in preceding subgroups of this group
  • F01L 3/00 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing facesParts or accessories thereof
  • B21J 1/02 - Preliminary treatment of metal stock without particular shaping, e.g. salvaging segregated zones, forging or pressing in the rough
  • B23P 15/00 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
  • F01L 3/04 - Coated valve members or valve seats

43.

Poppet valve with a formed seat, and method of making

      
Application Number 14208822
Grant Number 09163734
Status In Force
Filing Date 2014-03-13
First Publication Date 2014-07-10
Grant Date 2015-10-20
Owner NITTAN CORPORATION (Japan)
Inventor
  • Mikami, Maiku
  • Kurahashi, Kazunori

Abstract

A method of forming a poppet valve having a stem, a valve head and a valve seat while concurrently maintaining compressive residual stress without grain coarsening on both the valve body and the valve seat. The method includes forming a rounded cladded part on the valve head of the poppet valve by welding and forming a valve seat surface at a predetermined aperture angle and cutting the cladded part to form a smooth surface which is subjected to uniform contact pressure at a temperature less than the recrystallization temperature of the base material or cladding material, whichever is lower, to enhance the durability of the valve seat.

IPC Classes  ?

  • F16K 1/42 - Valve seats
  • B21K 1/22 - Making machine elements valve parts poppet valves, e.g. for internal-combustion engines
  • F01L 3/04 - Coated valve members or valve seats
  • B23P 15/00 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
  • F01L 3/00 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing facesParts or accessories thereof

44.

High-toughness cobalt-based alloy and engine valve coated with same

      
Application Number 13881362
Grant Number 09206715
Status In Force
Filing Date 2011-05-23
First Publication Date 2013-11-21
Grant Date 2015-12-08
Owner NITTAN CORPORATION (Japan)
Inventor
  • Otobe, Katsunori
  • Nishimura, Shinichi
  • Kurahashi, Kazunori

Abstract

A surface hardening material being excellent in impact resistance and having abrasion resistance is provided. Provided are: a high-toughness cobalt-based alloy containing 25.0 to 40.0 mass % of Cr, 0.5 to 12.0 mass % of a sum of W and/or Mo, 0.8 to 5.5 mass % of Si, and 0.5 to 2.5 mass % of B, 8.0 mass % or less of each of Fe, Ni, Mn, and Cu, and 0.3 mass % or less of C, the sum amount of Fe, Ni, Mn, and C being 10.0 mass % or less, and the remainder comprising 48.0 to 68.0 mass % of Co and unavoidable impurities; and an engine valve coated with the same.

IPC Classes  ?

  • B32B 15/00 - Layered products essentially comprising metal
  • F01L 3/02 - Selecting particular materials for valve members or valve seatsValve members or valve seats composed of two or more materials
  • B23K 10/02 - Plasma welding
  • B23K 35/30 - Selection of soldering or welding materials proper with the principal constituent melting at less than 1550°C
  • C22C 19/07 - Alloys based on nickel or cobalt based on cobalt
  • F01L 3/04 - Coated valve members or valve seats
  • C23C 30/00 - Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
  • C22C 19/00 - Alloys based on nickel or cobalt
  • C22C 1/04 - Making non-ferrous alloys by powder metallurgy
  • C22C 1/02 - Making non-ferrous alloys by melting
  • B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product

45.

Wear-resistant cobalt-based alloy and engine valve coated with same

      
Application Number 13881346
Grant Number 09206319
Status In Force
Filing Date 2011-05-23
First Publication Date 2013-08-29
Grant Date 2015-12-08
Owner NITTAN CORPORATION (Japan)
Inventor
  • Otobe, Katsunori
  • Nishimura, Shinichi
  • Kurahashi, Kazunori

Abstract

A surface hardening material being excellent in abrasion resistance and having impact resistance is provided. Provided are: a wear-resistant cobalt-based alloy containing 20.0 to 30.0 mass % of a sum of Mo and/or W, 0.8 to 2.2 mass % of B, 5.0 to 18.0 mass % of Cr, 5.0 mass % or less of a sum of Fe, Ni, Mn, Cu, Si and C, 1.0 mass % or less of Si, and 0.3 mass % or less of C, and the remainder comprising 55.0 to 70.0 mass % of Co and unavoidable impurities; and an engine valve coated with the same.

IPC Classes  ?

  • B32B 15/00 - Layered products essentially comprising metal
  • C09D 1/00 - Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
  • B23K 10/02 - Plasma welding
  • B23K 35/30 - Selection of soldering or welding materials proper with the principal constituent melting at less than 1550°C
  • C22C 19/07 - Alloys based on nickel or cobalt based on cobalt
  • F01L 3/04 - Coated valve members or valve seats
  • C23C 30/00 - Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
  • F16K 51/00 - Other details not peculiar to particular types of valves or cut-off apparatus
  • C22F 1/08 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
  • C22C 1/02 - Making non-ferrous alloys by melting

46.

Burring apparatus for friction welding machine

      
Application Number 13883717
Grant Number 08960524
Status In Force
Filing Date 2010-11-25
First Publication Date 2013-08-29
Grant Date 2015-02-24
Owner NITTAN CORPORATION (Japan)
Inventor
  • Okuno, Takehiro
  • Onose, Ryo
  • Sakane, Koji
  • Homma, Koichi

Abstract

A burring apparatus for a friction welding machine comprises a clamp unit provided at the front end of a horizontal main spindle, for holding work piece W1 coaxial with the main spindle, a clamp unit provided at the front end of a slide movable to and away from the main spindle in the direction of the axis of the main spindle and a doughnut-shaped cutter for shearing off a burr. Work piece W2 is moved forward together with the slide until work piece W2 comes into contact with work piece W1 so that the mated ends of work pieces W1 and W2 are friction welded together to form a joint work piece W. The burr formed on the jointed work piece W is sheared off by the cutter. The jointed work piece W is then liberated from the main spindle.

IPC Classes  ?

  • B23K 20/12 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by frictionFriction welding
  • B23K 20/26 - Auxiliary equipment
  • B23K 37/08 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for flash removal
  • B23K 20/00 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
  • B23D 79/12 - Machines or devices for peeling bars or tubes by making use of cutting bits arranged around the workpiece, otherwise than by turning

47.

NITTAN

      
Serial Number 85958523
Status Registered
Filing Date 2013-06-13
Registration Date 2014-01-21
Owner NITTAN CORPORATION (Japan)
NICE Classes  ? 07 - Machines and machine tools

Goods & Services

Cam phasers

48.

Miscellaneous Design

      
Serial Number 85958553
Status Registered
Filing Date 2013-06-13
Registration Date 2014-02-25
Owner NITTAN CORPORATION (Japan)
NICE Classes  ? 07 - Machines and machine tools

Goods & Services

Cam phasers

49.

Exhaust poppet valve and solution heat treatment method of the same

      
Application Number 13055222
Grant Number 08689761
Status In Force
Filing Date 2008-07-25
First Publication Date 2011-06-02
Grant Date 2014-04-08
Owner NITTAN CORPORATION (Japan)
Inventor
  • Tanaka, Yasuhito
  • Yokoyama, Hisanaga

Abstract

A forged exhaust poppet valve and a method of solution heat treating the same are provided. The forged exhaust poppet valve (10) includes a head portion (12) which has a seat portion (14) on the outer periphery thereof and is integral with a diametrically tapered neck portion (16) connected to a stem portion (18). Using a radio-frequency heating apparatus, a solution heat treatment is given to a predetermined transitional region (A) of the neck portion and the stem portion that is exposed to exhaust air during a valve opening period such that the grain size in the region (A) does not exceed ASTM 10, thereby securing a necessary high-temperature creep strength in the region (A) and a necessary hardness (wear resistance) in the seat portion (14) and thereby rendering the exhaust poppet valve highly durable.

IPC Classes  ?

  • F01L 3/02 - Selecting particular materials for valve members or valve seatsValve members or valve seats composed of two or more materials
  • F01L 3/00 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing facesParts or accessories thereof
  • H01F 1/04 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
  • H01F 1/00 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties
  • F01L 3/20 - Shapes or constructions of valve members, not provided for in preceding subgroups of this group
  • F01L 3/08 - Valve guidesSealing of valve stem, e.g. sealing by lubricant
  • C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon

50.

Nittan Valve

      
Application Number 009334186
Status Registered
Filing Date 2010-08-25
Registration Date 2011-01-14
Owner NITTAN Corporation (Japan)
NICE Classes  ?
  • 07 - Machines and machine tools
  • 12 - Land, air and water vehicles; parts of land vehicles

Goods & Services

Variable cam phaser; Variable valve timing controller; Engine valves; Valve-lifter. Vehicles; Apparatus for locomotion by land, air or water; air bags [safety devices for automobiles]; air pumps [vehicle accessories]; anti-dazzle devices for vehicles; anti-glare devices for vehicles; anti-skid chains; anti-theft alarms for vehicles; anti-theft devices for vehicles; automobile bodies; automobile chains; automobile chassis; automobile hoods; automobile tires [tyres]; axle journals; axles for vehicles; baby carriages; balance weights for vehicle wheels; bands for wheel hubs; baskets adapted for cycles; bells for bicycles, cycles; bicycle bells; bicycle brakes; bicycle chains; bicycle frames; bicycle handle bars; bicycle pumps; bicycle rims; bicycle saddles; bicycle spokes; bicycle stands; bicycle tires [tyres]; boat hooks; bodies for vehicles; bogies for railway cars; brake linings for vehicles; brake segments for vehicles; brake shoes for vehicles; brakes for bicycles, cycles; brakes for vehicles; buffers for railway rolling stock; bumpers for automobiles; caps for vehicle petrol [gas] tanks; casings for pneumatic tires [tyres]; casters for trolleys [vehicles] [carts (Am)]; chains for bicycles, cycles; cleaning trolleys; cleats [nautical]; clutches for land vehicles; connecting rods for land vehicles, other than parts of motors and engines; couplings for land vehicles; covers for baby carriages; covers for vehicle steering wheels; crankcases for land vehicle components, other than for engines; cranks for cycles; cycle bells; cycle brakes; cycle chains; cycle frames; cycle handle bars; cycle hubs; cycle mudguards; cycle pumps; cycle rims; cycle saddles; cycle spokes; cycle stands; cycle tires [tyres]; davits for boats; direction indicators for bicycles, cycles, etc; direction signals for vehicles; disengaging gear for boats; doors for vehicles; dress guards for bicycles, cycles; driving chains for land vehicles; driving motors for land vehicles; ejector seats for aircraft; elevating tailgates (Am) [parts of land vehicles]; engines for land vehicles; fenders for ships; flanges for railway wheel tires [tyres]; frames for bicycles, cycles; freewheels for land vehicles; funnels for locomotives; funnels for ships; gear boxes for land vehicles; gearing for land vehicles; gears for cycles; hand cars; handle bars for bicycles, cycles; head-rests for vehicle seats; hoods for baby carriages; hoods for vehicle engines; hoods for vehicles; horns for vehicles; hub caps; hubs for vehicle wheels; hydraulic circuits for vehicles; inclined ways for boats; inner tubes for bicycles, cycles; inner tubes for pneumatic tires [tyres]; jet engines for land vehicles; luggage carriers for vehicles; luggage nets for vehicles; luggage trucks; masts for boats; mine cart wheels; motors for cycles; motors for land vehicles; motors, electric, for land vehicles; mudguards; non-skid devices for vehicle tires [tyres]; oars; paddles for canoes; panniers adapted for cycles; pedals for cycles; pneumatic tires [tyres]; portholes; power tailgates (Am) [parts of land vehicles]; prams [baby carriages]; propulsion mechanisms for land vehicles; pumps for bicycles, cycles; pushchair covers; pushchair hoods; pushchairs; railway couplings; rearview mirrors; reduction gears for land vehicles; repair outfits for inner tubes; reversing alarms for vehicles; rims for vehicle wheels; rims for wheels of bicycles, cycles; rowlocks; rudders; sack-barrows; saddle covers for bicycles or motorcycles; saddles for bicycles, cycles or motorcycles; safety belts for vehicle seats; safety seats for children, for vehicles; screw-propellers; screw-propellers for boats; screws [propellers] for ships; sculls; seat covers for vehicles; security harness for vehicle seats; ships' hulls; ships' steering gears; shock absorbers for automobiles; shock absorbing springs for vehicles; shopping trolleys [carts (Am)]; ski carriers for cars; sleeping berths for vehicles; spars for ships; spikes for tires [tyres]; spoke clips for wheels; spokes for bicycles, cycles; stands for bicycles, cycles [parts of bicycles, cycles]; steering gears for ships; steering wheels for vehicles; stern oars; stroller covers [pushchairs]; strollers; studs for tires [tyres]; sun-blinds adapted for automobiles; suspension shock absorbers for vehicles; tailboard lifts [parts of land vehicles]; timbers [frames] for ships; tipping apparatus, parts of trucks and waggons; tipping bodies for lorries [trucks]; tires for bicycles, cycles; tires for vehicle wheels; tires, solid, for vehicle wheels; torque converters for land vehicles; torsion bars for vehicles; traction engines; trailer hitches for vehicles; transmission chains for land vehicles; transmission shafts for land vehicles; transmissions, for land vehicles; treads for retreading tires [tyres]; treads for vehicles [roller belts]; treads for vehicles [tractor type]; trolleys; tubeless tires [tyres] for bicycles, cycles; turbines for land vehicles; turn signals for vehicles; two-wheeled trolleys; tyres for bicycles, cycles; tyres for vehicle wheels; tyres, solid, for vehicle wheels; undercarriages for vehicles; upholstery for vehicles; valves for vehicle tires [tyres]; vehicle bumpers; vehicle chassis; vehicle covers [shaped]; vehicle running boards; vehicle seats; vehicle suspension springs; vehicle wheel rims; vehicle wheel spokes; vehicle wheel tires [tyres]; vehicle wheels; wheelbarrows; wheels for bicycles, cycles; windows for vehicles; windscreen wipers; windscreens; windshield wipers; windshields; inner tubes (adhesive rubber patches for repairing -); tires (flanges of railway wheel -); tires (non-skid devices for vehicle -).

51.

NT-VCP

      
Application Number 009334194
Status Registered
Filing Date 2010-08-25
Registration Date 2011-01-27
Owner NITTAN Corporation (Japan)
NICE Classes  ?
  • 07 - Machines and machine tools
  • 12 - Land, air and water vehicles; parts of land vehicles

Goods & Services

Variable cam phaser; Variable valve timing controller; Engine valves; Valve-lifter. Vehicles; Apparatus for locomotion by land, air or water.

52.

Miscellaneous Design

      
Application Number 009334161
Status Registered
Filing Date 2010-08-25
Registration Date 2011-01-10
Owner NITTAN Corporation (Japan)
NICE Classes  ?
  • 07 - Machines and machine tools
  • 12 - Land, air and water vehicles; parts of land vehicles

Goods & Services

Variable cam phaser; Variable valve timing controller; Engine valves; Valve-lifter. Vehicles; Apparatus for locomotion by land, air or water; air bags [safety devices for automobiles]; air pumps [vehicle accessories]; anti-dazzle devices for vehicles; anti-glare devices for vehicles; anti-skid chains; anti-theft alarms for vehicles; anti-theft devices for vehicles; automobile bodies; automobile chains; automobile chassis; automobile hoods; automobile tires [tyres]; axle journals; axles for vehicles; baby carriages; balance weights for vehicle wheels; bands for wheel hubs; baskets adapted for cycles; bells for bicycles, cycles; bicycle bells; bicycle brakes; bicycle chains; bicycle frames; bicycle handle bars; bicycle pumps; bicycle rims; bicycle saddles; bicycle spokes; bicycle stands; bicycle tires [tyres]; boat hooks; bodies for vehicles; bogies for railway cars; brake linings for vehicles; brake segments for vehicles; brake shoes for vehicles; brakes for bicycles, cycles; brakes for vehicles; buffers for railway rolling stock; bumpers for automobiles; caps for vehicle petrol [gas] tanks; casings for pneumatic tires [tyres]; casters for trolleys [vehicles] [carts (Am)]; chains for bicycles, cycles; cleaning trolleys; cleats [nautical]; clutches for land vehicles; connecting rods for land vehicles, other than parts of motors and engines; couplings for land vehicles; covers for baby carriages; covers for vehicle steering wheels; crankcases for land vehicle components, other than for engines; cranks for cycles; cycle bells; cycle brakes; cycle chains; cycle frames; cycle handle bars; cycle hubs; cycle mudguards; cycle pumps; cycle rims; cycle saddles; cycle spokes; cycle stands; cycle tires [tyres]; davits for boats; direction indicators for bicycles, cycles, etc; direction signals for vehicles; disengaging gear for boats; doors for vehicles; dress guards for bicycles, cycles; driving chains for land vehicles; driving motors for land vehicles; ejector seats for aircraft; elevating tailgates (Am) [parts of land vehicles]; engines for land vehicles; fenders for ships; flanges for railway wheel tires [tyres]; frames for bicycles, cycles; freewheels for land vehicles; funnels for locomotives; funnels for ships; gear boxes for land vehicles; gearing for land vehicles; gears for cycles; hand cars; handle bars for bicycles, cycles; head-rests for vehicle seats; hoods for baby carriages; hoods for vehicle engines; hoods for vehicles; horns for vehicles; hub caps; hubs for vehicle wheels; hydraulic circuits for vehicles; inclined ways for boats; inner tubes for bicycles, cycles; inner tubes for pneumatic tires [tyres]; jet engines for land vehicles; luggage carriers for vehicles; luggage nets for vehicles; luggage trucks; masts for boats; mine cart wheels; motors for cycles; motors for land vehicles; mudguards; non-skid devices for vehicle tires [tyres]; oars; paddles for canoes; panniers adapted for cycles; pedals for cycles; pneumatic tires [tyres]; portholes; power tailgates (Am) [parts of land vehicles]; prams [baby carriages]; propulsion mechanisms for land vehicles; pumps for bicycles, cycles; pushchair covers; pushchairs; railway couplings; rearview mirrors; reduction gears for land vehicles; repair outfits for inner tubes; reversing alarms for vehicles; rims for vehicle wheels; rims for wheels of bicycles, cycles; rowlocks; rudders; sack-barrows; saddle covers for bicycles or motorcycles; saddles for bicycles, cycles or motorcycles; safety belts for vehicle seats; safety seats for children, for vehicles; screw-propellers; screw-propellers for boats; screws [propellers] for ships; sculls; seat covers for vehicles; security harness for vehicle seats; ships' hulls; ships' steering gears; shock absorbers for automobiles; shock absorbing springs for vehicles; shopping trolleys [carts (Am)]; ski carriers for cars; sleeping berths for vehicles; spars for ships; spikes for tires [tyres]; spoke clips for wheels; spokes for bicycles, cycles; stands for bicycles, cycles [parts of bicycles, cycles]; steering gears for ships; steering wheels for vehicles; stern oars; stroller covers [pushchairs]; strollers; studs for tires [tyres]; sun-blinds adapted for automobiles; suspension shock absorbers for vehicles; tailboard lifts [parts of land vehicles]; timbers [frames] for ships; tipping apparatus, parts of trucks and waggons; tipping bodies for lorries [trucks]; tires for bicycles, cycles; tires for vehicle wheels; tires, solid, for vehicle wheels; torque converters for land vehicles; torsion bars for vehicles; traction engines; trailer hitches for vehicles; transmission chains for land vehicles; transmission shafts for land vehicles; transmissions, for land vehicles; treads for retreading tires [tyres]; treads for vehicles [roller belts]; treads for vehicles [tractor type]; trolleys; tubeless tires [tyres] for bicycles, cycles; turbines for land vehicles; turn signals for vehicles; two-wheeled trolleys; tyres for bicycles, cycles; tyres for vehicle wheels; tyres, solid, for vehicle wheels; undercarriages for vehicles; upholstery for vehicles; valves for vehicle tires [tyres]; vehicle bumpers; vehicle chassis; vehicle covers [shaped]; vehicle running boards; vehicle seats; vehicle suspension springs; vehicle wheel rims; vehicle wheel spokes; vehicle wheel tires [tyres]; vehicle wheels; wheelbarrows; wheels for bicycles, cycles; windows for vehicles; windscreen wipers; windscreens; windshield wipers; windshields; motors, electric, for land vehicles; pushchair hoods.

53.

NT-VCP

      
Serial Number 85091508
Status Registered
Filing Date 2010-07-23
Registration Date 2012-12-18
Owner NITTAN CORPORATION (Japan)
NICE Classes  ? 07 - Machines and machine tools

Goods & Services

CAM PHASERS