Patents by Inventor Kouji Sakai
Kouji Sakai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8781701Abstract: In a vehicular brake-by-wire braking system, during a four wheel simultaneous control mode when regeneration cooperative braking is implemented, a pair of electromagnetic isolation control valves and one of normally closed electromagnetic pressure relief valves corresponding to regeneration side left and right wheel brakes and normally closed electromagnetic pressure relief valves corresponding to non-regeneration side left and right wheel brakes are caused to operate to open and close, while the other of the normally closed electromagnetic pressure relief valves corresponding to the regeneration side left and right wheel brakes and the normally closed electromagnetic pressure relief valves corresponding to the non-regeneration side left and right wheel brakes are put in de-energized states in which the valves concerned are kept closed, and all normally open electromagnetic pressure supply valves are put in de-energized states in which the valves concerned are kept opened.Type: GrantFiled: March 14, 2008Date of Patent: July 15, 2014Assignees: Honda Motor Co., Ltd., Nissin Kogyo Co., Ltd.Inventors: Yasushi Aoki, Jiro Suzuki, Kouji Sakai
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Publication number: 20140068046Abstract: A first electronic device stores first configuration information of the first electronic device collected by a tamper-resistant chip on the first electronic device and approved by a third-party device in the portable medium. A second electronic device stores second configuration information of the second electronic device collected by a tamper-resistant chip on the second electronic device and approved by the third-party device in the portable medium and acquires the first configuration information from the portable medium. The first electronic device transmits the first configuration information of the first electronic device and the second configuration information of the second electronic device acquired from the portable medium to the second electronic device over a long-distance network.Type: ApplicationFiled: August 14, 2013Publication date: March 6, 2014Applicants: FUJITSU LIMITED, FUJITSU FSAS INC.Inventors: Kouji SAKAI, Seigo KOTANI
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Publication number: 20140068028Abstract: A first electronic device transmits first configuration information of the first electronic device collected by a tamper-resistant chip mounted thereon and approved by a third-party device to a second electronic device over a short-distance network. The second electronic device transmits second configuration information of the second electronic device collected by a tamper-resistant chip mounted thereon and approved by the third-party device to the first electronic device over the short-distance network. The first electronic device transmits the first configuration information and the second configuration information to the second electronic device over a network. The second electronic device controls connection between the first electronic device and the second electronic device over the network based on the first configuration information and the second configuration information received from the first electronic device.Type: ApplicationFiled: August 7, 2013Publication date: March 6, 2014Applicants: FUJITSU LIMITED, FUJITSU FSAS INC.Inventors: Kouji SAKAI, Seigo Kotani
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Patent number: 8661811Abstract: A vehicle brake device includes an elastic body being formed such that a circulation of an operation fluid is permitted from a front end to a rear end of the elastic body until a filling rate of the elastic body reaches a predetermined value in a filling area where deformation of the elastic body is stopped by restraint of a control piston in a state where a forward stroke of the control piston is less than at least a predetermined stroke, but the circulation of the operation fluid is stopped when the filling rate reaches the predetermined value or more.Type: GrantFiled: July 20, 2010Date of Patent: March 4, 2014Assignee: Nissin Kogyo Co., Ltd.Inventors: Risa Hirano, Kouji Sakai, Hiromitsu Takizawa, Hideki Hidume
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Patent number: 8376474Abstract: A vehicle braking apparatus includes: a control piston configured to operate so that a reaction force based on the fluid pressure of the boosted fluid pressure application chamber is balanced with a braking operation input from the brake operation member; an elastic member including: a first face adapted to contact with a simulator piston connected to the brake operation member and slidably accommodated in the control piston; and a second face; a sliding member adapted to contact with the second face, the sliding member being accommodated in the control piston; a spring disposed between the sliding member and the control piston; and an odd-shaped portion disposed on at least one of the first and second faces of the elastic member, the odd-shaped portion configured to increase a contacting area of the elastic member and at least one of the simulator piston and the sliding member.Type: GrantFiled: March 24, 2010Date of Patent: February 19, 2013Assignee: Nissin Kogyo Co., Ltd.Inventors: Risa Hirano, Kouji Sakai, Hiromitsu Takizawa, Hideki Hidume
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Publication number: 20120266717Abstract: A motorcycle includes an accelerator grip control. The accelerator grip control includes a grip sleeve provided rotatably around a handlebar, an accelerator grip member fixed to the grip sleeve, a collar fixed to the grip sleeve, an accelerator position sensor that detects rotational positions of the accelerator grip member; a case member that houses the collar and the accelerator position sensor; and annular members provided between the collar and the accelerator position sensor. The annular members include outer circumferential portions that are in contact with the case member along their entire circumferences, and the annular members include inner circumferential portions that are in contact with the collar along their entire circumferences.Type: ApplicationFiled: November 22, 2010Publication date: October 25, 2012Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHAInventor: Kouji Sakai
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Patent number: 8256216Abstract: An annular sealing member 95 for establishing sealing between a boosted hydraulic pressure application chamber 22 and an input-side annular chamber 93 formed between a casing and a backup piston 64A and connected to a hydraulic pressure source is disposed between the casing and the backup piston 64A, and communication passage 216 for establishing communication between the input-side annular chamber 93 and the boosted hydraulic pressure application chamber 22 as the backup piston 64A moves forward by a predetermined stroke or more is provided in one of the backup piston 64A and the casing.Type: GrantFiled: March 25, 2009Date of Patent: September 4, 2012Assignee: Nissin Kogyo Co., Ltd.Inventors: Kouji Sakai, Hiromitsu Takizawa, Takashi Kinoshita, Yoshiteru Matsunaga
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Patent number: 8242724Abstract: A driving device for three-phase alternating current synchronous motors controls state of charge of a capacitor, and a three-phase alternating current synchronous motor is started prior to the operation of the synchronous motor. Prior to control by a normal operation control unit, the state of charge of the capacitor is controlled by an initial state control unit and a synchronization control unit. Passage of large current through the capacitor immediately after the start of the execution of control by the normal operation control unit is suppressed. As a result, the operating state of the three-phase alternating current synchronous motor does not become unstable and the execution of control by the normal operation control unit can be started with the output voltage of the capacitor stable.Type: GrantFiled: March 17, 2009Date of Patent: August 14, 2012Assignee: DENSO CORPORATIONInventor: Kouji Sakai
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Publication number: 20120174575Abstract: A fluid pressure booster for a braking device includes a control piston on which an input brake operation acts in an advancing direction, and a reaction force based on fluid pressure of a booster fluid pressure generation chamber acts in a retracting direction. A pressure increasing valve is provided between a valve chamber communicating with a fluid pressure generation source and the booster fluid pressure generation chamber. A pressure reducing valve is provided between a release chamber communicating with a reservoir and the booster fluid pressure generation chamber. At least one contraction portion is formed between an outer periphery of a front portion of the pressing rod and an inner periphery of a front portion of a valve seat member.Type: ApplicationFiled: December 14, 2011Publication date: July 12, 2012Applicants: HONDA MOTOR., LTD., NISSIN KOGYO CO., LTD.Inventors: Risa HIRANO, Kouji Sakai, Kenji Suzuki
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Patent number: 8040089Abstract: Switching elements are driven by a control signal outputted from a control circuit, so that a rotating magnetic field is generated from a stator coil to rotate a rotor of a synchronous electric motor. The control signal is generated through use of a selected modulation scheme, which is selected from a plurality of modulation schemes. The control circuit determines which one of the modulation schemes is used as the selected modulation scheme based on a sensed voltage value of a voltage sensor, which senses an output voltage of a power supply device.Type: GrantFiled: April 14, 2009Date of Patent: October 18, 2011Assignee: DENSO CORPORATIONInventor: Kouji Sakai
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Publication number: 20110016861Abstract: A vehicle brake device includes an elastic body being formed such that a circulation of an operation fluid is permitted from a front end to a rear end of the elastic body until a filling rate of the elastic body reaches a predetermined value in a filling area where deformation of the elastic body is stopped by restraint of a control piston in a state where a forward stroke of the control piston is less than at least a predetermined stroke, but the circulation of the operation fluid is stopped when the filling rate reaches the predetermined value or more.Type: ApplicationFiled: July 20, 2010Publication date: January 27, 2011Applicant: NISSIN KOGYO CO., LTD.Inventors: Risa HIRANO, Kouji SAKAI, Hiromitsu TAKIZAWA, Hideki HIDUME
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Publication number: 20100244551Abstract: A vehicle braking apparatus includes: a control piston configured to operate so that a reaction force based on the fluid pressure of the boosted fluid pressure application chamber is balanced with a braking operation input from the brake operation member; an elastic member including: a first face adapted to contact with a simulator piston connected to the brake operation member and slidably accommodated in the control piston; and a second face; a sliding member adapted to contact with the second face, the sliding member being accommodated in the control piston; a spring disposed between the sliding member and the control piston; and an odd-shaped portion disposed at least one of the first and second faces of the elastic member, the odd-shaped portion configured to increase a contacting area of the elastic member and at least one of the simulator piston and the sliding member.Type: ApplicationFiled: March 24, 2010Publication date: September 30, 2010Applicant: NISSIN KOGYO CO., LTD.Inventors: Risa HIRANO, Kouji SAKAI, Hiromitsu TAKIZAWA, Hideki HIDUME
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Patent number: 7799595Abstract: In a semiconductor physical quantity sensor of electrostatic capacitance type, mutually facing peripheral areas (bonding areas) of a glass substrate and a silicon substrate are contacted for anodic bonding, while at the same time, both substrates have an anodic bonding voltage applied therebetween so as to be integrated. A fixed electrode is formed on a bonding face-side surface of the silicon substrate, while a movable electrode is formed on a bonding face-side surface of the semiconductor substrate. An equipotential wiring, which short-circuits the fixed electrode to the movable electrode as a countermeasure to discharge in anodic bonding, is formed on the bonding face-side surface of the glass substrate inside the bonding area before the anodic bonding. After the anodic bonding, the equipotential wiring is cut and removed.Type: GrantFiled: December 12, 2005Date of Patent: September 21, 2010Assignee: Panasonic Electric Works Co., Ltd.Inventors: Ryosuke Meshii, Kouji Sakai, Atsushi Ishigami, Eiichi Furukubo
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Patent number: 7673904Abstract: A vehicle body reinforcement device comprises an elongated shape with its middle portion comprising a hydraulic damper that produces a damping force against longitudinal deformation. Two vehicle body reinforcement devices may be mounted in a longitudinal manner to a vehicle body frame with a lateral space being defined between the two devices. Both ends of each of the vehicle body reinforcement devices can be removably attached from outside of the vehicle to positions that are exposed outside of the passenger compartment and below the vehicle body.Type: GrantFiled: February 8, 2006Date of Patent: March 9, 2010Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Toyoji Harada, Kouji Sakai
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Publication number: 20090256506Abstract: Switching elements are driven by a control signal outputted from a control circuit, so that a rotating magnetic field is generated from a stator coil to rotate a rotor of a synchronous electric motor. The control signal is generated through use of a selected modulation scheme, which is selected from a plurality of modulation schemes. The control circuit determines which one of the modulation schemes is used as the selected modulation scheme based on a sensed voltage value of a voltage sensor, which senses an output voltage of a power supply device.Type: ApplicationFiled: April 14, 2009Publication date: October 15, 2009Applicant: DENSO CORPORATIONInventor: Kouji Sakai
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Publication number: 20090241539Abstract: An annular sealing member 95 for establishing sealing between a boosted hydraulic pressure application chamber 22 and an input-side annular chamber 93 formed between a casing and a backup piston 64A and connected to a hydraulic pressure source is disposed between the casing and the backup piston 64A, and communication passage 216 for establishing communication between the input-side annular chamber 93 and the boosted hydraulic pressure application chamber 22 as the backup piston 64A moves forward by a predetermined stroke or more is provided in one of the backup piston 64A and the casing.Type: ApplicationFiled: March 25, 2009Publication date: October 1, 2009Applicant: NISSIN KOGYO CO., LTD.,Inventors: Kouji SAKAI, Hlromitsu Takizawa, Takashi Kinoshita, Yoshiteru Matsunaga
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Publication number: 20090237020Abstract: A driving device for three-phase alternating current synchronous motors controls state of charge of a capacitor, and a three-phase alternating current synchronous motor is started prior to the operation of the synchronous motor. Prior to control by a normal operation control unit, the state of charge of the capacitor is controlled by an initial state control unit and a synchronization control unit. Passage of large current through the capacitor immediately after the start of the execution of control by the normal operation control unit is suppressed. As a result, the operating state of the three-phase alternating current synchronous motor does not become unstable and the execution of control by the normal operation control unit can be started with the output voltage of the capacitor stable.Type: ApplicationFiled: March 17, 2009Publication date: September 24, 2009Applicant: DENSO CORPORATIONInventor: Kouji Sakai
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Publication number: 20090079232Abstract: A vehicle body reinforcement device comprises an elongated shape with its middle portion comprising a hydraulic damper that produces a damping force against longitudinal deformation. Two vehicle body reinforcement devices may be mounted in a longitudinal manner to a vehicle body frame with a lateral space being defined between the two devices. Both ends of each of the vehicle body reinforcement devices can be removably attached from outside of the vehicle to positions that are exposed outside of the passenger compartment and below the vehicle body.Type: ApplicationFiled: February 8, 2006Publication date: March 26, 2009Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHAInventors: Toyoji Harada, Kouji Sakai
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Patent number: 7482900Abstract: The micro relay of the present invention comprises a base substrate 3, an armature block 5, and a cover 7. The base substrate 3 has a storage recess 41 for accommodating an electromagnetic device 1. The storage recess is composed of a hole 41a penetrating the base substrate 3 and a thin storage recess lid fixed on the one surface of the base substrate to close the hole. The electromagnetic device 1 is isolated from a contact mechanism by the storage recess lid 41b to increase the reliability of the contacts. The electromagnetic device 1 includes a yoke 10, a coil 11 wound around the yoke to generate a flux in response to an exciting current, and a permanent magnet 12 secured to the yoke to generate a flux flowing through an armature 51 and the yoke 10. Because the permanent magnet 12 is secured to the yoke 10, this micro relay can reduce the thickness.Type: GrantFiled: January 25, 2005Date of Patent: January 27, 2009Assignee: Matsushita Electric Works, Ltd.Inventors: Takeshi Hashimoto, Noriteru Furumoto, Naoki Okumura, Hideki Enomoto, Takeshi Sadamori, Shinichi Kishimoto, Tsutomu Shimomura, Kouji Sakai, Masami Hori
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Patent number: 7464591Abstract: A semiconductor acceleration sensor having beam parts formed in substantially L-shape to surround a weight part, wherein formed to surround a square part, as seen in plan view and constituting the weight part, are two elongated L-shaped beam parts, at locations close to proximal end portions of which are formed protruding portions protruding from a fixed part toward the weight part, and receiving recessed portions protruding from the weight part toward the fixed part to surround the protruding portions. The protruding portions have an outer shape substantially the same as an inner wall surface of the receiving recessed portions so that movements of the weight part in any directions in a horizontal direction perpendicular to an up and down direction are limited as a result of reception of the protruding portions by the receiving recessed portions.Type: GrantFiled: January 20, 2006Date of Patent: December 16, 2008Assignee: Panasonic Electric Works Co., Ltd.Inventors: Yoshihisa Fukuda, Kouji Sakai, Atsushi Ishigami, Eiichi Furukubo, Ryosuke Meshii, Takashi Yajima