Patents by Inventor Yasuyuki Hishida
Yasuyuki Hishida 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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Publication number: 20120014637Abstract: A shock detection optical fiber sensor includes: a plastic fiber; a corrugated plate having a plurality of protrusions arranged in the longitudinal direction of the plastic optical fiber and formed to oppose to the plastic optical fiber; a mold plate covering the plastic optical fiber and the corrugated plate; a light emitting element connected to one end of the plastic optical fiber; and a light receiving element connected to the other end of the plastic optical fiber.Type: ApplicationFiled: September 8, 2005Publication date: January 19, 2012Inventors: Yasuyuki Hishida, Tomiya Abe, Hisanori Nakai, Soichi Sato, Yukio Ikeda, Morihisa Fukushi, Akira Suzuki, Shigenori Kobayashi, Hiroyuki Takahashi, Ryotaro Kachu, Motomi Iyoda
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Patent number: 7980606Abstract: In a vehicle bumper structure, an optical fiber sensor (32) is provided in a vehicle width direction on the front surface of a front-bumper reinforcement (30). A front-bumper absorber (28) is provided in front of the optical fiber sensor (32), the front-bumper absorber (28) formed of a soft absorber (54) and a hard absorber (56). The hard absorber is disposed at the bumper center region where the thickness of the bumper is increased. Accordingly, the thickness of the soft absorber (54) becomes substantially uniform in the vehicle width direction, so that a substantially uniform load is inputted to the optical fiber sensor (32) regardless of the collision position of the bumper with an object. As a result, variations in the output of the load-sensing unit are reduced.Type: GrantFiled: February 14, 2007Date of Patent: July 19, 2011Assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation, Hitachi Cable, Ltd.Inventors: Hiroyuki Takahashi, Yujiro Miyata, Ryotaro Kachu, Tetsuya Takafuji, Shigenori Kobayashi, Yasuyuki Hishida
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Patent number: 7779706Abstract: A cable-type load sensor having an advantage in layout and being capable of sensing the load precisely is provided. The cable-type load sensor comprises a linear member composed of electrically conductive rubber and having a hollow part extending in the longitudinal direction at the central part of the cross section, and a cladding layer composed of the same kind of rubber material as the linear member and covering the circumference on the linear member.Type: GrantFiled: January 21, 2009Date of Patent: August 24, 2010Assignee: Hitachi Cable, Ltd.Inventors: Tomiya Abe, Yasuyuki Hishida, Satoshi Yamamoto
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Patent number: 7747386Abstract: A collision detection sensor for detecting a collision of a vehicle and a collision object by converting the collision into a change in optical transmission characteristics of an optical fiber. The collision detection sensor has the optical fiber, a molding material formed on the periphery of the optical fiber, and a convex portion formed on the surface of the molding material.Type: GrantFiled: August 29, 2006Date of Patent: June 29, 2010Assignees: Hitachi Cable, Ltd., Denso CorporationInventors: Yasuyuki Hishida, Hisashi Sato, Akira Suzuki, Shigenori Kobayashi, Hiroyuki Takahashi
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Publication number: 20090322107Abstract: In a vehicle bumper structure, an optical fiber sensor (32) is provided in a vehicle width direction on the front surface of a front-bumper reinforcement (30). A front-bumper absorber (28) is provided in front of the optical fiber sensor (32), the front-bumper absorber (28) formed of a soft absorber (54) and a hard absorber (56). The hard absorber is disposed at the bumper center region where the thickness of the bumper is increased. Accordingly, the thickness of the soft absorber (54) becomes substantially uniform in the vehicle width direction, so that a substantially uniform load is inputted to the optical fiber sensor (32) regardless of the collision position of the bumper with an object. As a result, variations in the output of the load-sensing unit are reduced.Type: ApplicationFiled: February 14, 2007Publication date: December 31, 2009Inventors: Hiroyuki Takahashi, Yujiro Miyata, Ryotaro Kachu, Tetsuya Takafuji, Shigenori Kobayashi, Yasuyuki Hishida
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Publication number: 20090183578Abstract: A cable-type load sensor having an advantage in layout and being capable of sensing the load precisely is provided. The cable-type load sensor comprises a linear member composed of electrically conductive rubber and having a hollow part extending in the longitudinal direction at the central part of the cross section, and a cladding layer composed of the same kind of rubber material as the linear member and covering the circumference on the linear member.Type: ApplicationFiled: January 21, 2009Publication date: July 23, 2009Inventors: Tomiya ABE, Yasuyuki Hishida, Satoshi Yamamoto
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Publication number: 20080226218Abstract: An optical fiber 1 includes a core 11 and a cladding material 12. In a collision detection optical fiber sensor 100, a plurality of linear members 2 and 3 are twisted around an outer periphery of the cladding material 12 of the optical fiber 1. An elastic member 6 of the liner member 2 has an elasticity different from that of an elastic member 7 of the first linear member 3. The hardness of the elastic member 6 is lower than that of the elastic member 7. A rubber hardness difference measured by a durometer type A according to a JIS K6253 between the elastic member 6 and the elastic member 7 is not less than 10.Type: ApplicationFiled: October 30, 2007Publication date: September 18, 2008Applicants: Hitachi Cable LTD., Denso CorporationInventors: Tomiya Abe, Yasuyuki Hishida, Mitsuo Takaba, Satoshi Yamamoto, Katsushi Tsutsuda, Akira Suzuki, Shigenori Kobayashi
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Patent number: 7424179Abstract: An optical fiber sensor can be interposed between a bumper reinforcement and a load transmitting plate to extend in the direction of width of a vehicle along with the bumper reinforcement. In this case, when a change does not occur substantially in an immediately previous predetermined period in an output voltage of a light emission amount of the optical fiber sensor, a feedback control is performed in such a way that the change becomes a level of zero of the output voltage of the optical fiber sensor. In contrast, when a change in the output voltage is not substantially zero, the immediately previous state of emission of light is maintained. Accordingly, it is possible to effectively compensate a zero point shift caused by a temperature change or/and an aging degradation of the optical fiber sensor.Type: GrantFiled: March 27, 2006Date of Patent: September 9, 2008Assignees: DENSO CORPORATION, Toyota Jidosha Kabushiki Kaisha, Hitachi Cable Ltd.Inventors: Koji Ohtaka, Shigenori Kobayashi, Motomi Iyoda, Yukio Nakagawa, Yasuyuki Hishida, Takahiro Saito
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Publication number: 20080193075Abstract: An optical fiber sensor can be interposed between a bumper reinforcement and a load transmitting plate to extend in the direction of width of a vehicle along with the bumper reinforcement. In this case, when a change does not occur substantially in an immediately previous predetermined period in an output voltage of a light emission amount of the optical fiber sensor, a feedback control is performed in such a way that the change becomes a level of zero of the output voltage of the optical fiber sensor. In contrast, when a change in the output voltage is not substantially zero, the immediately previous state of emission of light is maintained. Accordingly, it is possible to effectively compensate a zero point shift caused by a temperature change or/and an aging degradation of the optical fiber sensor.Type: ApplicationFiled: March 27, 2006Publication date: August 14, 2008Applicant: Hitachi Cable, Ltd.Inventors: Koji Ohtaka, Shigenori Kobayashi, Motomi Iyoda, Yukio Nakagawa, Yasuyuki Hishida, Takahiro Saito
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Patent number: 7376292Abstract: An optical fiber sensor in which the insertion efficiency of a plastic fiber is improved, the potential danger of rupture of a mold member is decreased, the operation of the sensor in a low load area and the linearity of output of the sensor are improved. Plastic fiber for detection is inserted in insertion hole of molded member, and filler is filled in a gap between the plastic fiber for detection and the molded member.Type: GrantFiled: June 6, 2006Date of Patent: May 20, 2008Assignees: Hitachi Cable, Ltd., Denso Corporation, Toyoya Jidosha Kabushiki KaishaInventors: Yasuyuki Hishida, Takahiro Saito, Shigenori Kobayashi, Motomi Iyoda, Yukio Nakagawa
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Patent number: 7373029Abstract: A method for fabricating an optical fiber impulse sensor having an optical fiber and a molded portion molded around the perimeter of the optical fiber. The method forms, in the molded portion, an optical fiber insertion hole and an optical fiber insertion slit for inserting the optical fiber into the optical fiber insertion hole. The method inserts the optical fiber from the slit into the optical fiber insertion hole.Type: GrantFiled: January 12, 2007Date of Patent: May 13, 2008Assignees: Hitachi Cable, Ltd., Denso CorporationInventors: Morihisa Fukushi, Yasuyuki Hishida, Akira Suzuki, Shigenori Kobayashi, Hiroyuki Takahashi, Ryotaro Kachu
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Publication number: 20070183734Abstract: A method for fabricating an optical fiber impulse sensor having an optical fiber and a molded portion molded around the perimeter of the optical fiber. The method forms, in the molded portion, an optical fiber insertion hole and an optical fiber insertion slit for inserting the optical fiber into the optical fiber insertion hole. The method inserts the optical fiber from the slit into the optical fiber insertion hole.Type: ApplicationFiled: January 12, 2007Publication date: August 9, 2007Applicants: HITACHI CABLE, LTD., DENSO CORPORATIONInventors: Morihisa Fukushi, Yasuyuki Hishida, Akira Suzuki, Shigenori Kobayashi, Hiroyuki Takahashi, Ryotaro Kachu
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Publication number: 20070053647Abstract: A collision detection sensor for detecting a collision of a vehicle and a collision object by converting the collision into a change in optical transmission characteristics of an optical fiber. The collision detection sensor has the optical fiber, a molding material formed on the periphery of the optical fiber, and a convex portion formed on the surface of the molding material.Type: ApplicationFiled: August 29, 2006Publication date: March 8, 2007Applicants: HITACHI CABLE, LTD., DENSO CORPORATIONInventors: Yasuyuki Hishida, Hisashi Sato, Akira Suzuki, Shigenori Kobayashi, Hiroyuki Takahashi
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Publication number: 20060275013Abstract: An optical fiber sensor in which the insertion efficiency of a plastic fiber is improved, the potential danger of rupture of a mold member is decreased, the operation of the sensor in a low load area and the linearity of output of the sensor are improved. Plastic fiber for detection is inserted in insertion hole of molded member, and filler is filled in a gap between the plastic fiber for detection and the molded member.Type: ApplicationFiled: June 6, 2006Publication date: December 7, 2006Inventors: Yasuyuki Hishida, Takahiro Saito, Shigenori Kobayashi, Motomi Iyoda, Yukio Nakagawa
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Patent number: 5583492Abstract: Maintenance information is collected by a sensor on an electric power cable installed in a manhole. The information is transmitted to a radio transmitter which is positioned in a vicinity of a bottom plane of an inner lid in an opening of the manhole. The information is transmitted by the radio transmitter, and received by a receiving antenna mounted on a bottom plane of the inner lid. On a top plane of the inner lid, an electrode, a connecting lead or a transmitting antenna is provided to be connected to the receiving antenna by an impedance matching circuit. The information is supplied to an outer lid in the opening of the manhole by the opening of the manhole by the electrode using a spatial coupling capacitance relative to the outer lid, or the connecting lead directly connected to the outer lid. Thus, the information is transmitted as a radio signal by the outer lid functioning as an antenna. Otherwise, the information is radiated below the outer lid by the transmitting antenna.Type: GrantFiled: September 22, 1994Date of Patent: December 10, 1996Assignees: Hitachi Cable, Ltd., The Kansai Electric Power Co., Inc.Inventors: Yutaka Nakanishi, Shinichi Nakagawa, Yoshiaki Nakatsuru, Yasuyuki Hishida, Ryoji Matsubara, Kimiharu Kanemaru