Patents by Inventor Takeshi Hamanaka
Takeshi Hamanaka 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: 9391419Abstract: A method for manufacturing a contact terminal including a contact portion that slides against a surface of a conductive contact plate. The manufacturing method includes forming a projection in a metal plate by performing a drawing process, wherein the projection projects in a thicknesswise direction of the metal plate and has a larger diameter than the contact portion. The manufacturing method further includes forming the contact portion from the projection by performing a contraction pressing process at least once on the projection so that the diameter of the projection gradually decreases, while the height of the projection remains the same or decreases in a stepwise manner.Type: GrantFiled: December 18, 2012Date of Patent: July 12, 2016Assignees: Asmo Co., Ltd., Gifu Hightech Co., Ltd.Inventors: Takao Yamaki, Seiichi Murakami, Takeshi Hamanaka
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Patent number: 9267502Abstract: A motor-driven compressor includes a compression unit, an electric motor, a housing that includes an accommodating chamber and a wiring connection port, a motor driving circuit that includes a substrate arranged in the accommodating chamber, wiring electrically connected to the substrate and extending out of the housing through the wiring connection port, and a resin sealing member fitted to the wiring connection port. The wiring includes a primary conductor, which has a first end connected to the substrate and a second end, and a secondary conductor, which is connected to the second end of the primary conductor and arranged outside the housing. The secondary conductor includes a wire portion and a sheath that is made of an insulating material and covers the wire portion. The sealing member covers the sheath and a junction between the primary conductor and the secondary conductor.Type: GrantFiled: June 4, 2013Date of Patent: February 23, 2016Assignees: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, GIFU HIGHTECH CO., LTD.Inventors: Shingo Enami, Tsuyoshi Yamaguchi, Yoshikazu Fukutani, Akio Fujii, Takeshi Hamanaka
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Patent number: 9231458Abstract: A rotation plate including a surface, in which a fixed contact terminal slides in contact with the surface of the rotation plate. The rotation plate includes a movable contact plate and a holding member. The movable contact plate forms a predetermined conductive pattern. The holding member holds the movable contact plate and is formed from an insulating resin material. The movable contact plate and the holding member are molded integrally and fixed to each other so that a surface of the movable contact plate is exposed and does not project outward from a surface of the holding member.Type: GrantFiled: April 9, 2012Date of Patent: January 5, 2016Assignees: AMSO CO., LTD., GIFU HIGHTECH CO., LTD.Inventors: Takao Yamaki, Seiichi Murakami, Takeshi Hamanaka
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Patent number: 8936235Abstract: A fluid-filled type vibration damping device including a base component and a tubular mating component. The tubular mating component is externally fitted onto the base component by means of a diameter-constricting caulking with a sealing rubber clasped therebetween so as to constitute a mate-fastened portion. The tubular mating component extends axially outward beyond a sealed section of the mate-fastened portion so as to provide a caulking tube portion. A diametrical position of the tubular mating component at the sealed section is determined by contact of the caulking tube portion against an outside peripheral face of a positioning projection provided on the base component so as to define a diametrical positioning portion. The caulking tube portion is constricted in diameter and held in engagement with an axial edge portion of the positioning projection so as to form an axial positioning portion.Type: GrantFiled: March 8, 2012Date of Patent: January 20, 2015Assignees: Sumitomo Riko Company Limited, Nissan Motor Co., Ltd.Inventors: Hironori Koyama, Mutsumi Muraoka, Hironori Daito, Satoshi Umemura, Jyoji Tsutsumida, Shinichi Suganuma, Takeshi Hamanaka, Kaoru Murakami
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Publication number: 20130330217Abstract: A motor-driven compressor includes a compression unit, an electric motor, a housing that includes an accommodating chamber and a wiring connection port, a motor driving circuit that includes a substrate arranged in the accommodating chamber, wiring electrically connected to the substrate and extending out of the housing through the wiring connection port, and a resin sealing member fitted to the wiring connection port. The wiring includes a primary conductor, which has a first end connected to the substrate and a second end, and a secondary conductor, which is connected to the second end of the primary conductor and arranged outside the housing. The secondary conductor includes a wire portion and a sheath that is made of an insulating material and covers the wire portion. The sealing member covers the sheath and a junction between the primary conductor and the secondary conductor.Type: ApplicationFiled: June 4, 2013Publication date: December 12, 2013Inventors: Shingo ENAMI, Tsuyoshi Yamaguchi, Yoshikazu Fukutani, Akio Fujii, Takeshi Hamanaka
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Publication number: 20130049499Abstract: A rotation plate including a surface, in which a fixed contact terminal slides in contact with the surface of the rotation plate. The rotation plate includes a movable contact plate and a holding member. The movable contact plate forms a predetermined conductive pattern. The holding member holds the movable contact plate and is formed from an insulating resin material. The movable contact plate and the holding member are molded integrally and fixed to each other so that a surface of the movable contact plate is exposed and does not project outward from a surface of the holding member.Type: ApplicationFiled: April 9, 2012Publication date: February 28, 2013Applicants: GIFU HIGHTECH CO., LTD, ASMO CO., LTD.Inventors: Takao Yamaki, Seiichi Murakami, Takeshi Hamanaka
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Publication number: 20120242021Abstract: A fluid-filled type vibration damping device including a base component and a tubular mating component. The tubular mating component is externally fitted onto the base component by means of a diameter-constricting caulking with a sealing rubber clasped therebetween so as to constitute a mate-fastened portion. The tubular mating component extends axially outward beyond a sealed section of the mate-fastened portion so as to provide a caulking tube portion. A diametrical position of the tubular mating component at the sealed section is determined by contact of the caulking tube portion against an outside peripheral face of a positioning projection provided on the base component so as to define a diametrical positioning portion. The caulking tube portion is constricted in diameter and held in engagement with an axial edge portion of the positioning projection so as to form an axial positioning portion.Type: ApplicationFiled: March 8, 2012Publication date: September 27, 2012Applicants: NISSAN MOTOR CO., LTD., TOKAI RUBBER INDUSTRIES, LTD.Inventors: Hironori KOYAMA, Mutsumi MURAOKA, Hironori DAITO, Satoshi UMEMURA, Jyoji TSUTSUMIDA, Shinichi SUGANUMA, Takeshi HAMANAKA, Kaoru MURAKAMI
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Patent number: 6910683Abstract: In an anti-vibration device having a partition member dividing a fluid-sealed chamber into upside and downside, aimed at enhancing the anti-vibration performance by preventing unwanted leak of the fluid through through-holes of the partition member. To that end, the partition member is constructed of an elastic membrane partitioning the fluid-sealed chamber, and a pair of grids limiting displacements of the elastic membrane; and the elastic membrane is provided at its either surface with projecting streaks integral therewith, the projecting streaks surrounding through-holes, defined by the grids, over their whole peripheries and abutting on the grids, thereby regulating the flow of fluid among adjacent through-holes.Type: GrantFiled: May 29, 2003Date of Patent: June 28, 2005Assignees: Toyo Tire & Rubber Co., Ltd., Nissan Motor Co., Ltd.Inventors: Masaaki Itoh, Shingo Hatakeyama, Yukio Takashima, Takeshi Hamanaka
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Publication number: 20040239021Abstract: In an anti-vibration device having a partition member dividing a fluid-sealed chamber into upside and downside, aimed at enhancing the anti-vibration performance by preventing unwanted leak of the fluid through through-holes of the partition member. To that end, the partition member is constructed of an elastic membrane partitioning the fluid-sealed chamber, and a pair of grids limiting displacements of the elastic membrane; and the elastic membrane is provided at its either surface with projecting streaks integral therewith, the projecting streaks surrounding through-holes, defined by the grids, over their whole peripheries and abutting on the grids, thereby regulating the flow of fluid among adjacent through-holes.Type: ApplicationFiled: May 29, 2003Publication date: December 2, 2004Applicants: Toyo Tire & Rubber Co., Ltd., Nissan Motor Co., Ltd.Inventors: Masaaki Itoh, Shingo Hatakeyama, Yukio Takashima, Takeshi Hamanaka