An optical connector includes a ferrule, a ferrule holder, a housing, and an anti-rotation structure. The ferrule includes a through hole that extends in a first direction and holds an optical fiber inside the through hole. The anti-rotation structure is provided inside the housing and outside the ferrule, and prevents rotation of the ferrule about an axis extending in the first direction with the ferrule holder. The ferrule holder includes a tubular holder main body that accommodates the ferrule therein, and a flange part that protrudes outward from the outer periphery of the holder main body in a second direction that intersects the first direction. The flange part includes a configuration to fit with the anti-rotation structure. A center of the flange part in the first direction is located in a central region of the ferrule in the first direction.
NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY (Japon)
Inventeur(s)
Okuno, Kazuki
Higashino, Takahiro
Tawarayama, Hiromasa
Majima, Masatoshi
Masumura, Haruki
Kuroda, Yoshiyuki
Mitsushima, Shigenori
Abrégé
A porous metal body which has a three-dimensional network structure, and which is provided with a skeleton that forms the three-dimensional network structure and a cover layer that has fine pores and covers the skeleton. The three-dimensional network structure is provided with support column parts and a plurality of node parts that connect the support column parts; the skeleton contains a first metal that has alkali resistance; the fine pores have an average pore diameter of from 10 nm to 1 µm (inclusive); the cover layer contains a second metal that has alkali resistance, and may contain an alkali-soluble metal; and the content ratio of the alkali-soluble metal is from 0% by mass to 30% by mass (inclusive) based on the total mass of the skeleton and the cover layer.
C22C 19/03 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel
C22F 1/00 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid
C22F 1/10 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid du nickel ou du cobalt ou de leurs alliages
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY (Japon)
Inventeur(s)
Awazu, Tomoyuki
Majima, Masatoshi
Tsubokura, Mitsutaka
Oishi, Tetsuo
Abrégé
A method for separating metal components from a treatment material containing a silicate and metal elements includes: a reaction step of reacting the treatment material and a molten alkali hydroxide in which bubbles due to water vapor derived from water are generated by heating a hydroxide of an alkali metal or an alkaline-earth metal and the water in a state where the hydroxide and the water coexist, to obtain a reaction product; and a first precipitation step of dissolving the reaction product of the treatment material and the molten alkali hydroxide after the reaction step in water, thereby generating a precipitate containing the metal elements.
C22B 3/06 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques acides
C22B 3/12 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques alcalines
C22B 3/26 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction liquide-liquide utilisant des composés organiques
C22B 3/42 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction utilisant l'échange d'ions
C22B 59/00 - Obtention des métaux des terres rares
C25C 3/26 - Production, récupération ou affinage électrolytique de métaux par électrolyse de bains fondus du titane, du zirconium, de l'hafnium, du tantale ou du vanadium
C25C 3/30 - Production, récupération ou affinage électrolytique de métaux par électrolyse de bains fondus du manganèse
C25C 3/34 - Production, récupération ou affinage électrolytique de métaux par électrolyse de bains fondus des métaux non prévus dans les groupes
A drive circuit and an optical network unit capable of suppressing temperature dependency in a circuit transmitting an optical signal and realizing satisfactory communication are provided. The drive circuit includes a bias current supply circuit for supplying a bias current to a light-emitting element for transmitting an optical signal and a modulated current supply circuit for supplying to the light-emitting element, a modulated current having magnitude in accordance with a logical value of data to be transmitted, and has a first path through which the bias current flows, a second path including a path for supplying the modulated current to the light-emitting element from the modulated current supply circuit, through which a current returns to the bias current supply circuit through the modulated current supply circuit from the bias current supply circuit without going through the light-emitting element when the bias current flows, and a third path which is joined to the second path in the modulated current supply circuit and has an adjusting resistance before a junction, through which a current flows through the adjusting resistance to the bias current supply circuit when the bias current flows.
H01S 5/062 - Dispositions pour commander les paramètres de sortie du laser, p. ex. en agissant sur le milieu actif en faisant varier le potentiel des électrodes
Pregrouted PC steel (10) that has a 19-wire PC steel wire strand (1), a pregrouted layer (2) disposed on the outer circumference thereof, and a sheath (3) covering the outer circumference of the pregrouted layer (2), is filled with fill resin (4) between each steel wire (side wire) (1b, 1c, 1d). Because the fill resin (4) does not exude to the pregrouted layer (2) side before tensioning of the PC steel wire strand (1), the tensioning work of the PC steel wire strand (1) is not impeded due to the hardening of the pregrouted layer (2). Meanwhile, because the gaps between the steel wires are reduced when the PC steel wire strand (1) is under tension, due to the reduction, for the first time the fill resin (4) flows out (exudes) from between the steel wires into the pregrouted layer (2) and then hardens the same.
B28B 23/04 - Aménagements spécialement adaptés à la fabrication d'objets façonnés avec des éléments complètement ou partiellement enrobés dans le matériau de moulage dans lesquels les éléments enrobés sont des renforcements les éléments enrobés étant sous tension
E04C 5/08 - Éléments spécialement adaptés pour être utilisés dans des constructions précontraintes
E04G 21/12 - Montage d'éléments d'armatureApplication de la précontrainte
6.
PREGROUTED PC STEEL MATERIAL AND METHOD FOR HARDENING PREGROUT LAYER THEREOF
Provided is a pregrouted PC steel material comprising a PC steel stranded wire composed of a plurality of steel wires, a pregrout layer disposed on the outer periphery of the PC steel stranded wire so as to accommodate the PC steel stranded wire, a sheath covering the outer periphery of the pregrout layer, and a capsule including a pregrout-hardening agent and a film with which the agent is covered, the capsule being interposed among the steel wires constituting the PC steel stranded wire. The capsule has a strength such that the capsule is not broken before tensioning the PC steel stranded wire but is broken by a tensile force during the tensioning. Also provided is a method for hardening the pregrout layer.
An optical fiber cutter is provided, which can improve workability when performing an operation while either being held with a hand or placed on a workbench. The optical fiber cutter 1 comprises a cutter base 3 and a cutter lid 4 attached openably and closably to the cutter base 3. A slider 8 having a blade member for incising an optical fiber is attached to the cutter base 3 so as to be movable widthwise. A switching plate 15 is attached to a rear end part of the cutter base 3, while a switcher 16 is provided on the outer surface side of the switching plate 15. When the switcher 16 is at a first position, the cutter lid 4 engages a stopper, thereby attaining an opening angle of 35.degree.. When the switcher 16 is at a second position, the engagement between the cutter lid 4 and the stopper is released, whereby the cutter lid 4 attains an opening angle of 70.degree..
G02B 6/00 - Guides de lumièreDétails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p. ex. des moyens de couplage
An optical fiber cleaver capable of precisely counting and indicating the number of cuts of an optical fiber is provided. An optical fiber cleaver 1 includes a cleaver base body 3 having a holder guide portion 7 which positions a fiber holder 6 holding an optical fiber 2, and a cleaver lid body 4 attached to the cleaver base body 3 to be openable and closable. A slider having a blade member piercing the optical fiber 2 is attached to the cleaver base body 3 to be movable in a width direction. A pawl member 20 is arranged in one sidewall of the holder guide portion 7. Further, a count indication mechanism 21 which counts and indicates the number of times the slider returns to an initial position is provided in the cleaver base body 3. The optical fiber cleaver 1 is configured to enable a counting operation of the count indication mechanism 21 only when the fiber holder 6 is set in the holder guide portion 7 such that the pawl member 20 is pressed.
G02B 6/00 - Guides de lumièreDétails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p. ex. des moyens de couplage
A fiber cleaver is provided in which a circular blade can be efficiently used without increasing the workload imposed on the worker. The fiber cleaver includes a main body supporting a slider such that the slider is movable in the front-back direction. A disc-shaped circular blade configured to make a flaw in an optical fiber is rotatably provided to the slider. A columnar protrusion stands on a base of the main body. An engaging member engaging with a gear that rotates together with the circular blade is provided at the upper end of the columnar protrusion. The columnar protrusion is connected to an engaging member, which engages with the slider, with a spring interposed therebetween. The base has first to third recessed portions each anchoring the engaging member. The angle of rotation of the circular blade is changed among three angles with the position where the engaging member is anchored.
G02B 6/00 - Guides de lumièreDétails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p. ex. des moyens de couplage
Disclosed is a case for accommodating a fiber cleaver, the case being capable of preventing the fiber cleaver from being damaged. A case 1 accommodating a fiber cleaver includes a base 30 and a lid 32 such that the lid is openably and closably provided for the base 30 in an integrated fashion. The base 30 of the case has therein a positioning space 38 for the cleaver on its inner bottom surface, the positioning space 38 positioning a main body 5 included in a cleaver unit 3. Latches 39A and 39B protruding inwardly in the base 30 of the case are arranged on positioning walls 35A and 35B defining part of the positioning space 38 for the cleaver. The latches 39A and 39B have a function of retaining a support 8 of the main body 5 of the cleaver in a direction along the height of the base 30 of the case. The latch 39A further has a function of retaining a slider 15 included in the cleaver unit 3 in a sliding direction.
G02B 6/00 - Guides de lumièreDétails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p. ex. des moyens de couplage
G02B 6/25 - Préparation des extrémités des guides de lumière pour le couplage, p. ex. découpage
Provided is an optical fiber coating removal device capable of carrying out coating removal favorably and decreasing the tensile force required for coating removal without there being any problems due to the ingress of water. In the optical fiber coating removal device (11), an optical fiber securing unit (13) is separated from a coating removal device body (12) in a state in which a coating (1b) is cut and heated by a coating removal unit (31), and a glass fiber (1a) is thus withdrawn from the coating (1b). The coating removal unit (31) is provided with a heater supporting member (43) on which a heater (42) is mounted. The heater supporting member (43) is received in a receiving recess (51) formed in a housing (12a). An insulation space (55) is formed between the receiving recess (51) and the heater supporting member (43). A side surface of the heater supporting member (43) comes into contact with the internal surface of a sidewall (51b) of the receiving recess (51) by way of a lateral rib (61) formed in the heater supporting member (43), to seal the insulation space (55).
G02B 6/00 - Guides de lumièreDétails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p. ex. des moyens de couplage
12.
METHOD OF PRODUCED WATER TREATMENT, METHOD OF WATER REUSE, AND SYSTEMS FOR THESE METHODS
A method of produced water treatment in an in-situ recovery method of producing bitumen from oil sand, the method has the steps of: separating bitumen from bitumen-mixed fluid so as to leave produced water, the bitumen- mixed fluid having been recovered from the oil sand wells; and filtering the produced water via a microfiltration membrane made of polytetrafluoroethylene.
C02F 1/00 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout
C10G 1/04 - Production de mélanges liquides d'hydrocarbures à partir de schiste bitumineux, de sable pétrolifère ou de matières carbonées solides non fusibles ou similaires, p. ex. bois, charbon par extraction
13.
PROTECTION SLEEVE, MANUFACTURING APPARATUS FOR PROTECTION SLEEVE, AND MANUFACTURING METHOD FOR PROTECTION SLEEVE
The object of the invention is to prevent bending of an optical fiber and dislodging of a reinforcing rod. A protection sleeve includes a heat shrinkable tube and an adhesive tube and a reinforcing rod housed inside the heat shrinkable tube. The heat shrinkable tube, the adhesive tube, and the reinforcing rod are adhered together in a section spanning across a lengthwise section of the heat shrinkable tube. A protection sleeve manufacturing apparatus includes a jig for securing protection sleeves and a heating device. The jig is contrived to hold a plurality of protection sleeves (each of which includes a heat shrinkable tube and an adhesive tube and a reinforcing rod housed inside the heat shrinkable tube) in a parallel arrangement with spaces in-between. The heating device includes a plurality of hot air vents, a means of setting a distance between the jig and the hot air vents to a first distance, and a means of setting the jig and the hot air vents to a second distance that is closer than the first distance.
A powder coating composition for PC strand coating which, when used for the coating of a PC strand, can advantageously form a coating film having an even thickness at low cost without causing uneven thickness or stringness is disclosed. The powder coating composition of this invention for PC strand coating is characterized by having a melt viscosity of 3,000-15,000 poise.
B05D 1/24 - Application de matériaux en particules
B05D 7/20 - Procédés, autres que le flocage, spécialement adaptés pour appliquer des liquides ou d'autres matériaux fluides, à des surfaces particulières, ou pour appliquer des liquides ou d'autres matériaux fluides particuliers à des fils
B05D 7/24 - Procédés, autres que le flocage, spécialement adaptés pour appliquer des liquides ou d'autres matériaux fluides, à des surfaces particulières, ou pour appliquer des liquides ou d'autres matériaux fluides particuliers pour appliquer des liquides ou d'autres matériaux fluides particuliers
An optical fiber cutting device is configured so that a disk-like blade member is moved in a state, in which the blade member is pushed against a glass fiber part of an optical fiber, to form a flaw on a surface of the glass fiber part. The blade member is turned by a feed roller in synchronization with a movement operation of the blade member that rotates by a contact friction force generated when the blade member is put into contact with a contact member fixedly provided halfway a movement path of the blade member.
The present invention relates to a holder for housing a connector plug having an optical connector ferrule with a short optical fiber. In the known art, there is a concern that the optical connector ferrule or the short optical fiber can be broken during handling needed until the ferrule is set to a fusing splicing apparatus. The present invention addresses this by providing a holder capable of protecting the ferrule with a short optical fiber from external shock. The inventive holder is constructed to position the short optical fiber extended from the ferrule and to be fitted to a fusion splicing apparatus that fusion-splices the short optical fiber and other coated optical fiber.
An optical connector in which the housing property into a cabinet or the like can be enhanced because of the compacification, and which can solve problems of the increase of the bending loss of an optical fiber, the breakage, and the like is obtained.In an optical connector 1 which houses and holds a fusion spliced portion 13 where a short optical fiber 5 previously fitted to an optical connector ferrule 7 is fusion-spliced with a coated optical fiber 3, one end of a protection sleeve 15 which armors the fusion spliced portion 13 is coupled to the optical connector ferrule 7. As a result, the length of the protection sleeve 15 which covers the fusion spliced portion 13 so that the fusion spliced portion 13 is positioned at the middle can be set with reference to an end portion of the optical connector ferrule 7. Therefore, the protection sleeve 15 can be shortened, and compactification of the optical connector 1 can be realized.
The present invention relates to a holder for housing a connector plug having an optical connector ferrule with a short optical fiber. In the known art, there is a concern that the optical connector ferrule or the short optical fiber can be broken during handling needed until the ferrule is set to a fusing splicing apparatus. The present invention addresses this by providing a holder capable of protecting the ferrule with a short optical fiber from external shock. The inventive holder is constructed to position the short optical fiber extended from the ferrule and to be fitted to a fusion splicing apparatus that fusion-splices the short optical fiber and other coated optical fiber.
A splice protection heater capable of quickly and efficiently performing a fusion process without an excessive heating time, a fusion splicer including the splice protection heater, and a fusion splicing method are provided. The apparatus has a heating part for heat shrinking a protection sleeve that covers a fusion spliced portion of an optical fiber, a plurality of heating elements that can individually heat a plurality of protection sleeves with different timings by being individually turned ON/OFF by switches, or a heating element turned ON/OFF by a switch. This apparatus may also be provided with detecting section that detects whether or not the protection sleeve is set on the heating element, and turns the switch ON/OFF
A splice protection heater capable of quickly and efficiently performing a fusion process without an excessive heating time, a fusion splicer including the splice protection heater, and a fusion splicing method are provided. The apparatus has a heating part for heat shrinking a protection sleeve that covers a fusion spliced portion of an optical fiber, a plurality of heating elements that can individually heat a plurality of protection sleeves with different timings by being individually turned ON/OFF by switches, or a heating element turned ON/OFF by a switch. This apparatus may also be provided with detecting section that detects whether or not the protection sleeve is set on the heating element, and turns the switch ON/OFF.
A fiber cleaver is provided which is capable of cleaving a glass fiber portion in a short time without depending on a particular working environment. The fiber cleaver comprises a holding member for holding a glass fiber portion of an optical fiber, a cutter for affording a scratch to the glass fiber portion which is held by the holding member, an elastic member or spring for moving the cutter, and a slider engaging member for maintaining the elastic member or spring in a state of elastic deformation. Also provided is a fiber cleaver comprising a holding member for holding the glass fiber portion of an optical fiber, a cutter for affording a scratch to the glass fiber portion held by the holding member, and a holder engaging part for holding a holder that holds an optical fiber at its part having a protective covering. The holder engaging part has a first holder engaging member for pushing and holding the holder in a direction parallel to a movement direction of the cutter.
G02B 6/00 - Guides de lumièreDétails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p. ex. des moyens de couplage
It is an object of the invention to provide a tool for precision finishing and grooving of quenched steel by thinning a coating film of a CBN sintered compact tool.
The invention provides a surface-coated high hardness material for tool comprising a cubic boron nitride sintered compact (CBN sintered compact, hereinafter) as a substrate and at least one coating film layer formed on the surface of the substrate wherein said coating film layer has thickness of 0.1 .mu.m or more and less than 1 .mu.m and comprises, as main component, a compound having at least one kind of element selected from C, N and O, and Ti and Al. If this material is used as a grooving tool, excellent performance is exhibited. Examples of the coating film are an intermediate layer, a wear-resistant film, a surface layer and the like.
B23B 27/14 - Outils de coupe sur lesquels les taillants ou éléments tranchants sont en matériaux particulier
B23B 27/20 - Outils de coupe sur lesquels les taillants ou éléments tranchants sont en matériaux particulier à éléments tranchants constitués par des diamants
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
brevets
