Patents Represented by Attorney, Agent or Law Firm Armstrong, Westerman & Hattori
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Patent number: 6657014Abstract: A crosslinkable rubber composition comprising (a) 100 weight parts of a nitrile group-containing highly saturated copolymer rubber containing units of an ethlenically unsaturated dicarboxylic acid monoalkyl ester monomer, (b) 0.5 to 10 parts by weight of a polyamine crosslinking agent, and (c) 0.5 to 10 parts by weight of a basic crosslinking accelerator. This rubber composition gives a crosslinked nitrile group-containing highly saturated copolymer rubber article having excellent heat resistance, flex fatigue resistance and elongation, and reduced permanent set.Type: GrantFiled: February 20, 2002Date of Patent: December 2, 2003Assignee: Zeon CorporationInventors: Osamu Mori, Takafumi Kawanaka, Yoshiaki Aimura, Hiroyuki Kotsuji, Haruhiko Fujita
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Patent number: 6655914Abstract: A casing cover is used in separating a motor assembly and a pump assembly from each other in a pump device. The casing cover has a cylindrical wall portion having a motor-side positioning portion disposed on one of an inner and outer circumferential surface of the cylindrical wall portion for being fitted to a member of the motor assembly, and a pump-side positioning portion disposed on the other of an inner and outer circumferential surface of the cylindrical wall portion for being fitted to a member of the pump assembly.Type: GrantFiled: June 28, 2002Date of Patent: December 2, 2003Assignee: Ebara CorporationInventors: Yoshiaki Miyazaki, Hiroshi Uchida, Kenichi Kajiwara
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Patent number: 6655122Abstract: A core yarn manufacturing machine has a spinning unit including a hollow guide shaft member wherein the yarn passage is formed in the axis direction, and a nozzle applies a whirling flow to the tip section of the hollow guide shaft member. A core yarn is manufactured by winding the fiber bundle into the spinning unit, around the core fiber which is also fed, in the tip section of the hollow guide shaft member. The machine has a suction force producer for producing a suction force toward the interior of the yarn passage from the entrance of the hollow guide shaft member, and a core fiber feeding apparatus that feeds to the spinning unit. A control device controls the operation and non-operation of the whirling flow generating nozzle, the suction force producer and the core fiber feeding apparatus.Type: GrantFiled: August 24, 2001Date of Patent: December 2, 2003Assignee: Murata Kikai Kabushiki KaishaInventors: Masazumi Shigeyama, Harutoshi Sawada
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Patent number: 6655244Abstract: A centering apparatus for centering a disk about a center member such as a shaft or hub includes a plurality of pairs of actuator units. The actuator units of each of the pairs faces each other through the disk. Each of the actuator units has a member which moves linearly and can come into contact with the disk.Type: GrantFiled: June 18, 1999Date of Patent: December 2, 2003Assignee: Fujitsu LimitedInventors: Mitsuru Shiraishi, Koichi Oikawa, Hitoshi Komoriya, Yutaka Nakamura, Takao Hirahara
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Patent number: 6656660Abstract: A resist composition comprising (a) at least two kinds of polymers which become alkali-soluble by the action of an acid, (b) as a photoacid generator, a combination of an alkylsulfonyl diazomethane compound and a triarylsulfonium arylsulfonate compound or a diaryliodonium arylsulfonate compound, and (c) a solvent is excellent as a chemically amplified resist composition to give excellent pattern shape and very fine line-and-space, particularly when exposed to lights having a wavelength of 300 nm or less.Type: GrantFiled: January 27, 2000Date of Patent: December 2, 2003Assignee: Sumitomo Chemical Company, LimitedInventors: Fumiyoshi Urano, Hirotoshi Fujie, Naoki Takeyama, Koji Ichikawa
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Patent number: 6656153Abstract: A balloon catheter of the present invention has an outer tube having a first lumen inside it. At the distal end of the outer tube is connected the proximal end of the balloon portion so that a balloon space is formed inside it, the distal end of the balloon portion is joined to a cylindrical front tip portion, and pressurized fluid is introduced into and released from the balloon space through the first lumen of the outer tube so as to make the balloon portion expand or contract. Inside the first lumen of the outer tube is arranged an inner tube having a second lumen freely slidable in the axial direction. The distal end of the inner tube projects out from the distal end of the outer tube and is detachably attached to the front tip portion. The balloon catheter of the present invention may have a guidewire detachably attached to the front tip portion rather than providing the inner tube.Type: GrantFiled: March 8, 2000Date of Patent: December 2, 2003Assignee: Nippon Zeon Co., LTDInventors: Kouichi Sakai, Tetsuo Toyokawa, Takahiro Iida
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Patent number: 6655274Abstract: A printing cylinder for offset printing includes a cylinder member of a hollow cylinder having a covering portion which forms a substantially uniform, smooth outer circumferential surface having no spliced portion in the circumferential direction, the covering portion being capable of transferring printing images onto an adjacent printing cylinder or printing paper in contact with the covering portion; and printing cylinder support mechanism including a pair of support shafts which are supported on opposed frames such that the support shafts are rotatable about a common axis, the support shafts each having a shaft end portion which is connected to an end portion of the cylinder member via an engagement portion and by use of connection member. The engagement portion includes a groove and a ridge portion formed on the end surface of the cylinder member and the shaft end portion of the corresponding support shaft.Type: GrantFiled: July 2, 2002Date of Patent: December 2, 2003Assignee: Tokyo Kikai Seisakusho, Ltd.Inventors: Masayoshi Satoh, Shinji Kawashima
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Patent number: 6655267Abstract: Disclosed are a slide inclination correcting method and a slide inclination correcting apparatus in press machinery having a slide drive mechanism disposed in a top area of a press machine for driving a slide via a plurality of points to vertically move it up and down, thereby forming a work piece. According to the invention, the method and apparatus include the steps of, and means for, finding by measurement or computation for each of dies or die sets an eccentric load that is to develop in the slide in the process of forming a work piece to prepare a die based slide inclination correcting data for each of the dies or die sets; and on the basis of the die based slide inclination correcting data prepared, pre-imparting to the slide a compensatory amount of inclination which corresponds to a predicted amount of inclination caused the slide due to the eccentric load found.Type: GrantFiled: September 6, 2002Date of Patent: December 2, 2003Assignee: Komatsu Ltd.Inventors: Yoshiro Mukai, Hiroaki Honma, Katsuhiro Takano
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Patent number: 6656636Abstract: A nickel electrode for an alkaline storage battery employed as a positive electrode of an alkaline storage battery is formed by applying a paste containing active material particles composed of nickel hydroxide to a conductive substrate and drying said paste, wherein a conductive layer consisting of cobalt oxide containing sodium is formed on a surface of said active material particles, and niobium powder and/or niobium compound powder is added to the surface of said active material particles.Type: GrantFiled: June 22, 2001Date of Patent: December 2, 2003Assignee: Sanyo Electronic Co., Ltd.Inventors: Takeshi Ogasawara, Mitsunori Tokuda, Mutsumi Yano
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Patent number: 6658497Abstract: The present invention relates to a device connection state recognizing method capable of recognizing a connection state of devices without addition of signal lines dedicated to detection. Thus, in the method according to this invention, a portion of or all of a plurality of data signal lines are connected through pull-up resistors to a high electric potential or connected through pull-down resistors to a low electric potential in accordance with the connection state of the devices, and a processing unit reads, as structure information data, a high electric potential state/low electric potential state generated by the pull-up resistor/pull-down resistor in the portion of or all the plurality of data signal lines to recognize the connection state of the devices on the basis of the read structure information data. This invention is applicable to a various types of processing units which are to be connected through a common data bus to a plurality of devices.Type: GrantFiled: August 18, 1999Date of Patent: December 2, 2003Assignee: Fujitsu LimitedInventors: Yusuke Kawasaki, Shigeru Hashimoto, Koken Yamamoto
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Patent number: 6658311Abstract: A maintenance management system for a press line which enables even one person to carry out efficient maintenance operations. For this purpose, in the maintenance management system, a communication cable for a network is laid inside the press line with a management computer being the starting point, and a connector capable of being connected to a communicable device is placed in at least one predetermined location on the communication cable. A portable input/output terminal, which is connected to the connector, incorporates software for optionally detecting and displaying maintenance information in the management computer, and which allows an operator to operate the software, is included.Type: GrantFiled: March 16, 2000Date of Patent: December 2, 2003Assignee: Komatsu Ltd.Inventor: Eiji Doba
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Patent number: 6656417Abstract: A powder pressing apparatus comprises a die having a through hole, an upper punch and a lower punch. At least one of the upper and lower punches has a punching surface having an edge portion provided with a projection. The projection has a tip chamfered by a width not greater than 0.5 mm. The punching surface has a slope having a surface roughness Ra not greater than 1.0 &mgr;m. A rare-earth alloy powder is fed into a cavity formed in the through hole of the die. The rare-earth alloy powder in the cavity is oriented by magnetic field, and pressed by using the upper and lower punches. The upper punch and the lower punch are brought closest to each other at a minimum distance not smaller than 1.7 mm during the pressing. An obtained compact is used for manufacture of a sintered body and a voice coil motor.Type: GrantFiled: June 19, 2001Date of Patent: December 2, 2003Assignee: Sumitomo Special Metals Co., Ltd.Inventors: Seiichi Kohara, Shinji Kidowaki
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Patent number: 6657343Abstract: A magnetic fluid bearing motor provided with a bearing assembly, the bearing assembly comprising a shaft, a substantially solid porous sleeve, magnetic fluid oil, and the like, wherein the shaft or the sleeve is formed of a ferromagnetic substance, and the surface of the shaft or the sleeve is locally magnetized such that the magnetization-varying portion is so arranged as to correspond to the bearing portion. Inside the porous sleeve is formed magnetic flux density gradient which is set at the maximum on the bearing surface, and thereby oil diluted with air bubbles is divided into dense and rarefied portions so as to retain a proper amount of oil with sufficiently high viscosity in the bearing portion. With the above stated structure, an inexpensive and long-wearing motor can be attained.Type: GrantFiled: February 21, 2001Date of Patent: December 2, 2003Assignee: Kura Laboratory CorporationInventor: Yoshikazu Ichiyama
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Patent number: 6657282Abstract: A semiconductor device has a resin package layer on a principal surface of a semiconductor chip, on which a number of bump electrodes are formed, wherein the semiconductor device has a chamfer surface or a stepped surface on a top edge part such that the external shock or stress applied to such an edge part is dissipated by the chamfer surface of the stepped surface.Type: GrantFiled: March 15, 2002Date of Patent: December 2, 2003Assignee: Fujitsu LimitedInventors: Norio Fukasawa, Hirohisa Matsuki, Kenichi Nagashige, Yuzo Hamanaka, Muneharu Morioka
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Patent number: 6655253Abstract: An airship envelope manufacturing method uses a braider such that the envelope is formed as one object composed by the braider. A pair of braiding materials, whose braiding angle is ±&thgr;° to the axis, and an axial material whose angle is 0° to the axis, are organized as the braiding layer by the braider BR and the envelope En shaped like the airship is composed as one body by the braiding layer. The thickness of the braiding layer in both of the axial end parts of the airship envelope is arranged to be formed thinner than the thickness in the axial central part. The three braiding layers can be a spindle-shaped tape made of a plurality of parallel fibers having non-identical lengths, and the width of the spindle-shaped tape along the airship axis can be a function of an airship diameter along the airship axis.Type: GrantFiled: December 11, 2001Date of Patent: December 2, 2003Assignee: Murata Kikai Kabushiki KaishaInventors: Hiroshi Uchida, Tadashi Uozumi, Masahiko Onda
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Patent number: 6657345Abstract: It is an object of the present invention to provide magnetic bearing controller which is able to levitate the controlled object stably by using controlled magnetic forces. In the magnetic bearing controller which supplies a controlled current to an electromagnet for levitating a rotating body at a predetermined position, the controller is provided with an eliminator unit for eliminating frequency components of frequency area which is used by the status detector unit. The eliminator unit is inserted between signal amplifier unit and power amplifier unit for generating controlled current.Type: GrantFiled: January 3, 2002Date of Patent: December 2, 2003Assignee: Ebara CorporationInventor: Hiroyuki Shinozaki
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Patent number: 6653576Abstract: A sensor unit having a sensor and an adjustment unit is welded to a vehicle. After the mounting of the sensor unit, a receiver unit externally receives modification information for modifying the load signal adjustment. Thereby, the load signal outputted from the sensor is adjusted by the adjustment unit responsive to the modification information to be externally outputted. Thus, alter the mounting of the sensor unit, the receiver unit receives the modification information, and the adjustment unit adjusts the load signal supplied from the sensor based on the modification information. This allows the sensor unit to unitarily have the sensor and the adjustment unit. Thereby, the adjustment unit can be modified by the modification information externally supplied. Accordingly, the sensor unit with the adjustment unit can be applied to various types of vehicles.Type: GrantFiled: May 17, 2001Date of Patent: November 25, 2003Assignee: Yazaki CorporationInventors: Katsuji Suzuki, Toshihiko Ikoma
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Patent number: 6652679Abstract: The present invention intends to provide a production method for a highly reliable bulk metallic glass of a high cold draft of 70% or more, and better post-cold working mechanical properties than those of the metallic glass being cast. The bulk metallic glass is obtained by pressing and expanding an alloy melt of composition capable of being glassified between the cooled upper and lower molds, which are highly heat-conductive water-cooled molds, so as to apply pressure to the melt while it is solidified. Nano-particles are thus dispersed in the amorphous phase of the metallic glass, thereby obtaining a metallic glass with nano-particles dispersed in its amorphous phase. The metallic glass with nano-particles of such a high ductility is further cold worked, for example by rolling to make the final product.Type: GrantFiled: October 26, 2001Date of Patent: November 25, 2003Assignee: Japan Science and Technology CorporationInventors: Akihisa Inoue, Tao Zhang
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Patent number: 6652673Abstract: A zirconium system amorphous alloy having a composition expressed by a general formula Zr100-X-Y-a-b Tix Aly Cua Nib wherein a, b, X, and Y in the formula represent atomic percentage, and fulfill X<10, Y>5, Y<−(1/2)X+35/2, 15≦a≦25, and 5≦b≦15, the zirconium system amorphous alloy has an amorphous phase of more than 50 volume % of the alloy.Type: GrantFiled: September 15, 1998Date of Patent: November 25, 2003Assignees: Sumitomo Rubber Industries, Ltd., YKK CorporationInventors: Akihisa Inoue, Tao Zhang, Masahide Onuki, Tetsuo Yamaguchi
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Patent number: 6652773Abstract: A polymer dispersion composition obtained by dispersing an electrode active material and a polymer having a gel content of 50% or more in an organic dispersion medium of which boiling point at 760 mmHg is 80° C. or above. The composition is successfully usable as, for instance, a binder composition for batteries, and the battery produced therefrom is high in initial capacity and small in the drop of capacity.Type: GrantFiled: December 3, 2001Date of Patent: November 25, 2003Assignee: Nippon Zeon Co., Ltd.Inventors: Koichiro Maeda, Toshihiro Inoue, Haruhisa Yamamoto, Keiko Imai