ECOLE NATIONALE SUPERIEURE DES MINES DE PARIS (France)
ASSOCIATION POUR LA RECHERCHE ET LE DEVELOPPEMENT DES METHODES ET PROCESSUS INDUSTRIELS "ARMINES" (France)
J.P.B SYSTEME (France)
Inventor
Sangouard, Benjamin
Colin, Christophe
Dioh, Emmanuel
Badin, Brieuc
Abstract
Indirect additive manufacturing installation for indirect additive manufacturing by projection of binder onto a powder bed, comprising a support, a powder supply means configured to form successive powder beds on the support, a print head configured to selectively project the binder onto each of the successive powder beds, and a counting device for counting the drops of binder projected by the print head onto the powder beds. A method for indirect additive manufacturing by projecting binder onto a powder bed, comprising forming successive powder beds on a support, selectively projecting binder onto each of the powder beds, the method further comprising counting the projected binder drops.
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B29C 64/165 - Processes of additive manufacturing using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber
Nut retaining devices and related methods are disclosed. An exemplary nut retaining device may include a housing defining an interior receptacle, the housing including attachment structure configured for fixing the housing to a base structure; a nut received within the receptacle and having screw threads for engaging a threaded fastener; retaining structure engageable with the nut and retaining the nut within the receptacle; anti-rotation structure between the housing and the nut constraining the nut against rotation relative to the housing; the anti-rotation structure configured to provide a clearance movement between the nut and the housing in at least one of a rotation direction rotationally about the screwing axis of the nut, or an axial direction parallel to the screwing axis of the nut, or a radial direction relative to the axial direction that is parallel to the screwing axis of the nut.
The invention relates to a retaining part (20) comprising elastic bearing elements configured to secure rotary assembly elements (4). The invention also relates to a wheel of an aircraft landing gear, equipped with such a retaining part (20). The invention also relates to a method for manufacturing such a retaining part (20).
F16B 39/10 - Locking of screws, bolts, or nuts in which the locking takes place after screwing down by a plate or ring immovable with regard to the bolt or object
F16B 39/24 - Locking of screws, bolts, or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
F16B 39/32 - Locking by means of a pawl or pawl-like tongue
4.
REINFORCING BAR COUPLERS AND RELATED TOOLS AND METHODS
Couplers configured to connect a first reinforcing bar end portion of a first reinforcing bar with a second reinforcing bar end portion of a second reinforcing bar are disclosed. In some embodiments, the first and second reinforcing bar end portions include radially outwardly facing, substantially parallel, circumferentially oriented reinforcing bar end portion grooves. An exemplary coupler includes a first reinforcing bar connecting portion configured to receive the first reinforcing bar end portion, the first reinforcing bar connecting portion comprising a plurality of first reinforcing bar connecting portion engagement elements arranged to extend radially inward into the first reinforcing bar end portion grooves, and a second reinforcing bar connecting portion configured to receive the second reinforcing bar end portion, the second reinforcing bar connecting portion comprising a plurality of second reinforcing bar connecting portion engagement elements arranged to extend radially inward into the second reinforcing bar end portion grooves.
Nut retaining devices and related methods are disclosed. An exemplary nut retaining device may include a housing defining an interior receptacle, the housing including attachment structure configured for fixing the housing to a base structure; a nut received within the receptacle and having screw threads for engaging a threaded fastener; retaining structure engageable with the nut and retaining the nut within the receptacle; anti-rotation structure between the housing and the nut constraining the nut against rotation relative to the housing; the anti-rotation structure configured to provide a clearance movement between the nut and the housing in at least one of a rotation direction rotationally about the screwing axis of the nut, or an axial direction parallel to the screwing axis of the nut, or a radial direction relative to the axial direction that is parallel to the screwing axis of the nut.
A locking fitting assembly that can be removably installed in a tapped hole on a housing and resists unintended loosening of the fitting assembly. The fitting assembly maybe installed at a mounting location for receiving the fitting assembly, and includes abase with engagement structure configured to engage corresponding structure adjacent the mounting location to secure the base against rotation. The fitting assembly further includes a nipple fitting received on the base and having first and second oppositely disposed coupling features. The first coupling feature is configured to mate with a complementary coupling feature of the housing, such as the tapped hole, whereby the nipple fitting can be sealingly secured to the housing. Locking structure disposed between the base and the nipple fitting is configured to resist relative rotation between the base and the nipple fitting.
An instrumented, load-sensing washer that can be used on a bolted joint to facilitate determining an axial clamping load of the bolted joint. The washer includes an annular washer body having first and second oppositely disposed axial ends and an outer circumferential sidewall. At least one strain gauge is provided on the circumferential sidewall and is configured to sense a deformation of the washer body do to clamping forces of the bolted joint. The washer further includes a communication assembly operatively coupled with the at least one strain gauge. The communication assembly may include an integrated circuit adapted to receive electrical signals from the at least one strain gauge related to the axial load borne by the washer.
F16B 31/02 - Screwed connections specially modified in view of tensile loadBreak-bolts for indicating or limiting tensile load
G01L 5/24 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
8.
Screw-fixing device, with locking in the screwed state
A nut includes locking jaws, a floating end of which is actuated by cam profiles inside a rotary actuation ring. The jaws are produced by removing material from the body of the nut, and shift from a locking state to a release state and vice versa by elastic bending deformation. A locking surface on the inside of the jaws has the same thread as the body of the nut.
A fluid-tight fitting includes at least one strain gauge or includes at least one passage, said passage extending radially through a nut and communicating with an interior chamber defined by a first conduit, a second conduit, and the nut, or includes a visual indicator associated with at least one of a nut or a first conduit of the fitting.
F16L 19/06 - Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
F16L 19/025 - Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
A locking fitting assembly that can be removably installed in a tapped hole on a housing and resists unintended loosening of the fitting assembly. The fitting assembly maybe installed at a mounting location for receiving the fitting assembly, and includes a base with engagement structure configured to engage corresponding structure adjacent the mounting location to secure the base against rotation. The fitting assembly further includes a nipple fitting received on the base and having first and second oppositely disposed coupling features. The first coupling feature is configured to mate with a complementary coupling feature of the housing, such as the tapped hole, whereby the nipple fitting can be sealingly secured to the housing. Locking structure disposed between the base and the nipple fitting is configured to resist relative rotation between the base and the nipple fitting.
An instrumented, load-sensing washer that can be used on a bolted joint to facilitate determining an axial clamping load of the bolted joint. The washer includes an annular washer body having first and second oppositely disposed axial ends and an outer circumferential sidewall. At least one strain gauge is provided on the circumferential sidewall and is configured to sense a deformation of the washer body do to clamping forces of the bolted joint. The washer further includes a communication assembly operatively coupled with the at least one strain gauge. The communication assembly may include an integrated circuit adapted to receive electrical signals from the at least one strain gauge related to the axial load borne by the washer.
G01L 5/24 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
F16B 31/02 - Screwed connections specially modified in view of tensile loadBreak-bolts for indicating or limiting tensile load
G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
12.
Retaining device for a threaded member, in particular for a nut
A nut is prevented from turning during screwing by a body attached to one of the parts to be tightened by rivets. The body prevents the nut from rotating via a ring coupled without clearance with the nut and coupled with radial clearance to the body, in order to allow the nut to self-position itself along the axis imposed on the screw by the bores traversed by the screw. The nut can thus be a standard nut or a floating cage nut. Application to the retaining of nuts that are inaccessible and/or require a high level of security against unintentional unscrewing.
The nut comprises locking jaws (14), a floating end of which is actuated by cam profiles inside a rotary actuation ring (19). The jaws are produced by removing material from the body (11) of the nut and shift from the locking state to the release state and vice versa by elastic bending deformation. The locking surface (16) on the inside of the jaws has the same thread as the body of the nut.
F16B 39/12 - Locking of screws, bolts, or nuts in which the locking takes place after screwing down by means of locknuts
F16B 39/284 - Locking by means of elastic deformation
F16B 39/32 - Locking by means of a pawl or pawl-like tongue
F16B 21/18 - Means without screw-thread for preventing relative axial movement of a pin, spigot, shaft, or the like and a member surrounding itStud-and-socket releasable fastenings without screw-thread by separate parts with grooves or notches in the pin or shaft with circlips or like resilient retaining devicesMeans without screw-thread for preventing relative axial movement of a pin, spigot, shaft, or the like and a member surrounding itStud-and-socket releasable fastenings without screw-thread by separate parts with grooves or notches in the pin or shaft Details
The invention relates to a fluid-tight connector which includes: - either at least one strain gauge (80; 86), - either at least one passage (78), said passage extending radially through a nut (22) and communicating with an interior chamber (76) defined by a first conduit (12) of the connector, a second conduit (14) and the nut (22), - either a visual indicator (40; 50; 60; 62) associated with at least one of a nut or a first conduit.
F16L 19/025 - Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
F16L 19/02 - Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
G01L 5/24 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
15.
RETAINING DEVICE FOR A THREADED MEMBER, IN PARTICULAR FOR A NUT
A nut (2) is prevented from turning during screwing by a body (12) attached to one of the parts to be tightened (6) by rivets (14). The body (12) prevents the nut (19) from rotating via a ring (19) coupled without clearance with the nut (19) and coupled with radial clearance to the body (12), in order to allow the nut to self-position itself along the axis (3) imposed on the screw (4) by the bores (9, 11) traversed by the screw. The nut can thus be a standard nut or a floating cage nut. Application to the retaining of nuts that are inaccessible and/or require a high level of security against unintentional unscrewing.
F16B 39/10 - Locking of screws, bolts, or nuts in which the locking takes place after screwing down by a plate or ring immovable with regard to the bolt or object
F16B 39/08 - Locking of screws, bolts, or nuts in which the locking takes place after screwing down with a cap interacting with the nut, connected to the bolt by a pin or cotter-pin
A sealing device in the form of a plug that is receivable in a threaded hole of a case includes a threaded central body, a skirt connected to the central body, and locking/unlocking means that opposes spontaneous unscrewing of the plug and is automatically activated by rotation of the plug and corresponding movement along an axis. The locking/unlocking means includes a first releasable coupling component coupled for rotation with the central body, and a second releasable coupling component facing the first coupling component at least during screwing and unscrewing. In at least in a tightened condition of the plug, the second coupling component is secured against rotation relative to the case by rotation restricting means located inside the threaded bore. In the screwed condition, an annular end face of the skirt bears against a bearing face of the second releasable coupling component to transmit tightening thrust to the case.
F16B 39/32 - Locking by means of a pawl or pawl-like tongue
F16B 39/22 - Locking of screws, bolts, or nuts in which the locking takes place during screwing down or tightening
B64F 5/60 - Testing or inspecting aircraft components or systems
F16B 39/24 - Locking of screws, bolts, or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
F16B 39/26 - Locking of screws, bolts, or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object with spring washers fastened to the nut or bolt-head
17.
SELF-LOCKING SCREWING ATTACHMENT DEVICES AND ASSEMBLIES PROVIDED WITH SAME
The present invention relates to a self-locking screwing attachment device. In one embodiment, the device includes a first element 6a having an inner thread, the first element 6a being screwed onto a threaded tip 3a. In other embodiments, the first element has an outer thread and can either be made of a hollow body or have a closed end so as to constitute, for instance, a borescope.
F16B 39/24 - Locking of screws, bolts, or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
F16B 39/282 - Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
18.
Self-locking screwing attachment devices and assemblies provided with same
A self-locking screwing attachment device. In one embodiment, the device includes a first element having an inner thread, the first element being screwed onto a threaded tip. In other embodiments, the first element has an outer thread and can either be made of a hollow body or have a closed end so as to constitute, for instance, a borescope.
F16B 39/32 - Locking by means of a pawl or pawl-like tongue
F16B 39/26 - Locking of screws, bolts, or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object with spring washers fastened to the nut or bolt-head
F16B 39/282 - Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
19.
Self-locking screwing attachment device and assembly provided with same
A nut for securing first and second pipe end-pieces together includes a nut lock having a stop member secured to the nut body, and a second element which is rotatable inside the nut body and having a locking feature adapted to lock onto a corresponding locking structure of the second end-piece. The stop member and the second element include corresponding face teeth which are urged to intermesh by an axial compression spring. At or near the tightened condition of the assembly, the second element is locked onto the second end-piece so that rotation of the nut is possible only if the torque applied exceeds a given threshold, for which the face teeth jump over each other while the spring is alternately stressed. A compact design is obtained with the lock positioned at the rear of the nut thread. The clamping face is axially between the nut thread and the lock.
F16B 39/32 - Locking by means of a pawl or pawl-like tongue
F16B 39/26 - Locking of screws, bolts, or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object with spring washers fastened to the nut or bolt-head
F16B 39/282 - Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
20.
Safety connecting device, in particular for piping, an end-coupler for such device, and a method for manufacturing a nut therefor
The device connects a first end-coupler with a second end-coupler, in particular of a piping. A nut is provided with a threaded bore in which the first end-coupler is screwed along a longitudinal axis. In a tightening position, the first end-coupler is in axial stress with a second end-coupler accommodated in the nut. Anti-rotation means are provided between the nut and at least one of the end-couplers to prevent relative rotation except when a torque exceeding a predetermined threshold is applied thereto. The anti-rotation means consist of at least one tab made in the material of the nut to lockingly interfere with substantially planar faces formed on the second end-coupler.
F16L 19/00 - Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
F16L 19/02 - Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
B21K 1/70 - Making machine elements nuts of special shape, e.g. self-locking nuts, wing nuts
The invention relates to a shut-off device comprising a plug intended to be placed over a threaded orifice of a casing, or to be removed therefrom, by screwing and unscrewing respectively, the plug comprising a central body bearing a screw thread, and locking and unlocking means that oppose the spontaneous unscrewing of the plug and that are activated automatically by the turning of the plug and its corresponding progression in the direction of screwing along a longitudinal axis. The locking and unlocking means comprise two releaseable coupling members, of which a first member is coupled to and turns with the central body via a protective skirt and of which a second member can be prevented from turning with respect to the casing during screwing.
F16B 39/22 - Locking of screws, bolts, or nuts in which the locking takes place during screwing down or tightening
F16B 39/26 - Locking of screws, bolts, or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object with spring washers fastened to the nut or bolt-head
F01D 21/00 - Shutting-down of machines or engines, e.g. in emergencyRegulating, controlling, or safety means not otherwise provided for
F02B 77/00 - Component parts, details, or accessories, not otherwise provided for
F16B 39/24 - Locking of screws, bolts, or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
F16B 39/282 - Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
The device connects a first end-coupler (1) with a second end-coupler (2), in particular of a piping. A nut (15) is provided with a threaded bore (17) in which the first end-coupler (1) is screwed along a longitudinal axis (X). In a tightening position, the first end-coupler (1) is in axial stress with a second end-coupler (2) accommodated in the nut. Anti-rotation means are provided between the nut (15, 115) and at least one (2) of the end-couplers to prevent relative rotation except when a torque exceeding a predetermined threshold is applied thereto. The anti-rotation means consist of at least one tab (21) made in the material of the nut (15) to lockingly interfere with substantially planar faces formed on the second end-coupler (2).
F16L 19/00 - Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
F16L 25/06 - Construction or details of pipe joints not provided for in, or of interest apart from, groups comprising radial locking means
F16L 37/084 - Couplings of the quick-acting type in which the connection between abutting or axially-overlapping ends is maintained by locking members combined with automatic locking
F16L 37/091 - Couplings of the quick-acting type in which the connection between abutting or axially-overlapping ends is maintained by locking members combined with automatic locking by means of a ring provided with teeth or fingers
23.
Device for the secured connection of two end fittings, particularly of a pipe
The device connects a first end fitting to a second end fitting, particularly of a pipe. A nut is provided with a threaded bore into which the first end fitting is screwed along a longitudinal axis. In the tightened position, the first end fitting is axially stressed relative to the second end fitting housed in the nut. Rotation-proofing structure is provided between the nut and at least one of the first and second end fittings hereafter referred to as the locking end fitting. The rotation-proofing structure includes at least one strip arranged around the locking end fitting. The strip comprises at least one protrusion radially penetrating into at least one concavity.
F16L 27/00 - Adjustable jointsJoints allowing movement
F16L 19/00 - Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
24.
SHUT-OFF DEVICE WITH AUTOMATICALLY ACTIVATABLE LOCKING
The invention relates to a shut-off device comprising a plug (1) intended to be placed over a threaded orifice (2) of a casing (3), or to be removed therefrom, by screwing and unscrewing respectively, the plug comprising a central body (4) bearing a screw thread (5), and locking and unlocking means that oppose the spontaneous unscrewing of the plug and that are activated automatically by the turning of the plug (1) and its corresponding progression in the direction of screwing along a longitudinal axis (X). The locking and unlocking means comprise two releaseable coupling members (7, 8), of which a first member (7) is coupled to and turns with the central body (4) via a protective skirt (10) and of which a second member (8) can be prevented from turning with respect to the casing (3) during screwing.
F16B 39/24 - Locking of screws, bolts, or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
26.
DEVICE FOR THE SECURED CONNECTION OF TWO END FITTINGS, PARTICULARLY OF A PIPE
The device connects a first end fitting (1, 101) to a second end fitting (2, 102), particularly of a pipe. A nut (15, 115) is provided with a threaded bore (17, 117) into which the first end fitting (1, 101) is screwed along a longitudinal axis (X). In the tightened position, the first end fitting (1, 101) is axially stressed relative to the second end fitting (2, 102) housed in the nut. Rotation-proofing means are provided between the nut (15, 115) and at least one of the first (1, 101) and second (2, 102) end fittings hereafter referred to as the locking end fitting. The rotation-proofing means consist of at least one strip (14, 114) arranged around the locking end fitting. The strip comprises at least one protrusion (23, 23', 123) radially penetrating into at least one concavity (8, 108).
F16L 39/00 - Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
F16L 19/00 - Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
06 - Common metals and ores; objects made of metal
07 - Machines and machine tools
Goods & Services
Metal self-locking nuts; metal screws; gas or fluid connectors, namely, metal pipes and plugs for gas and fluid transfer; metal pipe clamps; metal junctions for pipes; metal bore scope plugs Airplane engine parts, namely, oilpan and crankcase plugs, bore scope plugs, cam shafts, fuel injectors, ventilating systems sold as an integral part of airplane engines and comprised of ducts and fans, and sensors, particle detectors and pressure regulators for combustion chambers
06 - Common metals and ores; objects made of metal
Goods & Services
Metal self-locking nuts; metal screws and plugs; metal bore scope plugs; gas or fluid connectors, namely, metal pipes for gas and fluid transfer; metal pipe clamps; metal junctions for pipes
06 - Common metals and ores; objects made of metal
07 - Machines and machine tools
09 - Scientific and electric apparatus and instruments
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
20 - Furniture and decorative products
Goods & Services
(1) Parts of aeroplane and motor vehicle engines namely, self locking nuts, screws and plugs, bore scope plugs, pressure and temperature sensors, metal and combustion particle detectors, gas and fluid connectors, pipe clamps, junctions for pipes.
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Parts of aeroplane and motor vehicle engines namely, self locking nuts, screws and plugs, bore scope plugs, pressure and temperature sensors, metal and combustion particle detectors, gas and fluid connectors, crank shafts, pipe clamps, junctions for pipes, fuel injectors, pressure regulators and ventilating fans. (1) Research and design of mechanical parts, namely aeroplane and motor vehicle engine parts such as self locking nuts, plugs and screws, drain plugs and bolt locks, gas and fluid fittings, bore scope plugs, clamps, ducting links, chip detectors, fans.
12 - Land, air and water vehicles; parts of land vehicles
42 - Scientific, technological and industrial services, research and design
Goods & Services
Motors and engines (except for land vehicles); Aeronautical engines; Parts of aeroplane motors and engines, namely self-braking plugs, nuts and screws, borescope plugs, Sensors, Shafts,Pipe clamps, Joints for pipes, Injectors,Particle detectors, fluid or gas connectors; Brake segments other than for vehicles; Metalworking machines; Pressure regulators and ventilating systems (machine parts and motors and engines). Motors and engines for land vehicles; Parts of motors and engines, namely self-braking nuts and screws, connectors, borescope plugs, sensors, shafts, pipe clamps, junctions for pipes, injectors, particle detectors; Hydraulic circuits and ventilation systems for vehicles. Research and design of mechanical parts, scientific and technological services for the design and development of motors and engines, parts of motors and engines, clamping and connection systems, sensors, gas and particle detectors, bore scopes, sockets and plugs for ventilation systems and instruments.
12 - Land, air and water vehicles; parts of land vehicles
42 - Scientific, technological and industrial services, research and design
Goods & Services
Motors and engines (except for land vehicles); Aeronautical engines; Parts of aeroplane engines, namely self-braking nuts and plugs, bore scope plugs, sensors, particle detectors, gas or fluid connectors, shafts, pipe clamps, junctions for pipes, injectors; Brake segments other than for vehicles; Metalworking machines; Pressure regulators and ventilating systems (machine parts and motors and engines). Motors and engines for land vehicles; Parts of motors and engines, namely self-braking nuts and screws, connectors, bore scope plugs, sensors, particle detectors, shafts, pipe clamps, junctions for pipes, injectors; Hydraulic circuits and ventilation systems for vehicles. Research and design of mechanical parts, scientific and technological services for the design and development of motors and engines, parts of motors and engines, clamping and connection systems, sensors, gas and particle detectors, bore scopes, sockets and plugs for ventilation systems and instruments.
33.
SELF-LOCKING SCREWING ATTACHMENT DEVICE AND ASSEMBLY PROVIDED WITH SAME
The invention relates to a self-locking screwing attachment device (1a, 1b) including a nut (2a, 2b) screwed onto a threaded tip (3a, 3b) extending in a screwing axis (X), characterised in that the nut (2a, 2b) includes: a first element (6a, 6b) rotating relative to the tip (3a, 3b) when screwing; a second element (13a, 13b) rotatably engaged with the tip (3b) or an adjacent part (5) to be assembled, the tip (3a) passing therethrough; a stop member (23a, 23b) rotatably secured to the first element (6a, 6b); a releasable coupling means (26a, 26b, 27a, 27b, 28a, 28b) between the stop member (23a, 23b) and the second element (13a, 13b), the nut also being provided with an area for direct clamping between a first clamping surface (20a, 20b) of the first element (6a, 6b) and a second clamping surface (21a, 21b) of the second element (13a, 13b), when the second element (13a, 13b) axially engages with the tip (3a, 3b) or said adjacent part (5) to be assembled.
The device connects a first end fitting (1, 101) to a second end fitting (2, 102), particularly of a pipe. A nut (15, 115) is provided with a threaded bore (17, 117) into which the first end fitting (1, 101) is screwed along a longitudinal axis (X). In the tightened position, the first end fitting (1, 101) is axially stressed relative to the second end fitting (2, 102) housed in the nut. Rotation-proofing means are provided between the nut (15, 115) and at least one of the first (1, 101) and second (2, 102) end fittings hereafter referred to as the locking end fitting. The rotation-proofing means consist of at least one strip (14, 114) arranged around the locking end fitting. The strip comprises at least one protrusion (23, 23', 123) radially penetrating into at least one concavity (8, 108).
F16L 19/00 - Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
F16L 39/00 - Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
35.
SHUT-OFF DEVICE WITH AUTOMATICALLY ACTIVATABLE LOCKING
The invention relates to a shut-off device comprising a plug (1) intended to be placed over a threaded orifice (2) of a casing (3), or to be removed therefrom, by screwing and unscrewing respectively, the plug comprising a central body (4) bearing a screw thread (5), and locking and unlocking means that oppose the spontaneous unscrewing of the plug and that are activated automatically by the turning of the plug (1) and its corresponding progression in the direction of screwing along a longitudinal axis (X). The locking and unlocking means comprise two releaseable coupling members (7, 8), of which a first member (7) is coupled to and turns with the central body (4) via a protective skirt (10) and of which a second member (8) can be prevented from turning with respect to the casing (3) during screwing.
The device connects a first end-coupler (1) with a second end-coupler (2), in particular of a piping. A nut (15) is provided with a threaded bore (17) in which the first end-coupler (1) is screwed along a longitudinal axis (X). In a tightening position, the first end-coupler (1) is in axial stress with a second end-coupler (2) accommodated in the nut. Anti-rotation means are provided between the nut (15, 115) and at least one (2) of the end-couplers to prevent relative rotation except when a torque exceeding a predetermined threshold is applied thereto. The anti-rotation means consist of at least one tab (21) made in the material of the nut (15) to lockingly interfere with substantially planar faces formed on the second end-coupler (2).
F16L 19/00 - Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
F16L 25/06 - Construction or details of pipe joints not provided for in, or of interest apart from, groups comprising radial locking means
F16L 37/084 - Couplings of the quick-acting type in which the connection between abutting or axially-overlapping ends is maintained by locking members combined with automatic locking
F16L 37/091 - Couplings of the quick-acting type in which the connection between abutting or axially-overlapping ends is maintained by locking members combined with automatic locking by means of a ring provided with teeth or fingers
37.
RETAINING DEVICE FOR A THREADED MEMBER, IN PARTICULAR FOR A NUT
A nut (2) is prevented from turning during screwing by a body (12) attached to one of the parts to be tightened (6) by rivets (14). The body (12) prevents the nut (19) from rotating via a ring (19) coupled without clearance with the nut (19) and coupled with radial clearance to the body (12), in order to allow the nut to self-position itself along the axis (3) imposed on the screw (4) by the bores (9, 11) traversed by the screw. The nut can thus be a standard nut or a floating cage nut. Application to the retaining of nuts that are inaccessible and/or require a high level of security against unintentional unscrewing.
F16B 39/08 - Locking of screws, bolts, or nuts in which the locking takes place after screwing down with a cap interacting with the nut, connected to the bolt by a pin or cotter-pin
F16B 39/10 - Locking of screws, bolts, or nuts in which the locking takes place after screwing down by a plate or ring immovable with regard to the bolt or object
38.
SCREW-FIXING DEVICE, WITH LOCKING IN THE SCREWED STATE
The nut comprises locking jaws (14), a floating end of which is actuated by cam profiles inside a rotary actuation ring (19). The jaws are produced by removing material from the body (11) of the nut and shift from the locking state to the release state and vice versa by elastic bending deformation. The locking surface (16) on the inside of the jaws lias the same thread as the body of the nut.
An instrumented, load-sensing washer that can be used on a bolted joint to facilitate determining an axial clamping load of the bolted joint. The washer includes an annular washer body having first and second oppositely disposed axial ends and an outer circumferential sidewall. At least one strain gauge is provided on the circumferential sidewall and is configured to sense a deformation of the washer body do to clamping forces of the bolted joint. The washer further includes a communication assembly operatively coupled with the at least one strain gauge. The communication assembly may include an integrated circuit adapted to receive electrical signals from the at least one strain gauge related to the axial load borne by the washer.
F16B 31/02 - Screwed connections specially modified in view of tensile loadBreak-bolts for indicating or limiting tensile load
G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
G01L 5/24 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
The invention relates to a fluid-tight connector which includes: - either at least one strain gauge (80; 86), - either at least one passage (78), said passage extending radially through a nut (22) and communicating with an interior chamber (76) defined by a first conduit (12) of the connector, a second conduit (14) and the nut (22), - either a visual indicator (40; 50; 60; 62) associated with at least one of a nut or a first conduit.
F16L 19/02 - Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
F16L 19/025 - Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
G01L 5/24 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
A locking fitting assembly that can be removably installed in a tapped hole on a housing and resists unintended loosening of the fitting assembly. The fitting assembly maybe installed at a mounting location for receiving the fitting assembly, and includes a base with engagement structure configured to engage corresponding structure adjacent the mounting location to secure the base against rotation. The fitting assembly further includes a nipple fitting received on the base and having first and second oppositely disposed coupling features. The first coupling feature is configured to mate with a complementary coupling feature of the housing, such as the tapped hole, whereby the nipple fitting can be sealingly secured to the housing. Locking structure disposed between the base and the nipple fitting is configured to resist relative rotation between the base and the nipple fitting.
Nut retaining devices and related methods are disclosed. An exemplary nut retaining device may include a housing defining an interior receptacle, the housing including attachment structure configured for fixing the housing to a base structure; a nut received within the receptacle and having screw threads for engaging a threaded fastener; retaining structure engageable with the nut and retaining the nut within the receptacle; anti-rotation structure between the housing and the nut constraining the nut against rotation relative to the housing; the anti-rotation structure configured to provide a clearance movement between the nut and the housing in at least one of a rotation direction rotationally about the screwing axis of the nut, or an axial direction parallel to the screwing axis of the nut, or a radial direction relative to the axial direction that is parallel to the screwing axis of the nut.
The invention relates to a self-locking screwing attachment device (1a, 1b) including a nut (2a, 2b) screwed onto a threaded tip (3a, 3b) extending in a screwing axis (X), characterised in that the nut (2a, 2b) includes: a first element (6a, 6b) rotating relative to the tip (3a, 3b) when screwing; a second element (13a, 13b) rotatably engaged with the tip (3b) or an adjacent part (5) to be assembled, the tip (3a) passing therethrough; a stop member (23a, 23b) rotatably secured to the first element (6a, 6b); a releasable coupling means (26a, 26b, 27a, 27b, 28a, 28b) between the stop member (23a, 23b) and the second element (13a, 13b), the nut also being provided with an area for direct clamping between a first clamping surface (20a, 20b) of the first element (6a, 6b) and a second clamping surface (21a, 21b) of the second element (13a, 13b), when the second element (13a, 13b) axially engages with the tip (3a, 3b) or said adjacent part (5) to be assembled.
