Patents by Inventor Yasuhiko Mihara
Yasuhiko Mihara 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: 10654227Abstract: A method of manufacturing an elongated resin molded article having a hollow structure including: using an elongated elastic core including a composite of an elastic body and a continuous yarn; molding a resin material on an outer peripheral surface of the elastic core; and then exerting tensile force on the elastic core and extracting the elastic core in a lengthwise direction so as to obtain the elongated resin molded article having the hollow structure. An elongated resin molded article having a hollow structure, including a curved portion and a branched portion in combination, wherein the resin molded article has a composite structure in which a resin material is reinforced with a braided continuous fiber across an entire length thereof including the curved portion and the branched portion.Type: GrantFiled: February 23, 2016Date of Patent: May 19, 2020Assignee: SUMITOMO RIKO COMPANY LIMITEDInventors: Yasuhiko Mihara, Shigemitsu Hattori, Asami Nakai, Tadashi Uozumi, Akio Ohtani
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Publication number: 20160271888Abstract: A method of manufacturing an elongated resin molded article having a hollow structure including: using an elongated elastic core including a composite of an elastic body and a continuous yarn; molding a resin material on an outer peripheral surface of the elastic core; and then exerting tensile force on the elastic core and extracting the elastic core in a lengthwise direction so as to obtain the elongated resin molded article having the hollow structure. An elongated resin molded article having a hollow structure, including a curved portion and a branched portion in combination, wherein the resin molded article has a composite structure in which a resin material is reinforced with a braided continuous fiber across an entire length thereof including the curved portion and the branched portion.Type: ApplicationFiled: February 23, 2016Publication date: September 22, 2016Applicant: SUMITOMO RIKO COMPANY LIMITEDInventors: Yasuhiko MIHARA, Shigemitsu HATTORI, Asami NAKAI, Tadashi UOZUMI, Akio OHTANI
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Patent number: 8039162Abstract: A unit cell for use in a solid polymer electrolyte fuel cell comprising: a membrane/electrode assembly including a fuel electrode and an oxidant electrode disposed on either side of a solid polymer electrolyte membrane, the assembly being sandwiched from either side by a first separator and a second separator to give a stacked construction to form therebetween a fuel gas flow passage and an oxidant gas flow passage. The solid polymer electrolyte membrane has a projecting portion projecting outwardly beyond the fuel electrode and the oxidant electrode, and the projecting portion is coated by a reinforcing resin member. Connecting grooves formed on a primary face of the separators connecting both ends of the fuel gas/oxidant gas flow passages with a fuel/oxidant gas feed/discharge ports, respectively. The reinforcing resin member is placed so as to bridge openings of the connecting grooves in order to give a tunnel construction to the connecting grooves.Type: GrantFiled: February 8, 2007Date of Patent: October 18, 2011Assignee: Tokai Rubber Industries, Ltd.Inventors: Yutaka Ishioka, Hideaki Tanahashi, Yasuhiko Mihara
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Patent number: 7951481Abstract: A separator for use in a solid polymer electrolyte fuel cell, including a membrane/electrode assembly including a fuel electrode and an oxidant electrode disposed on either side of a solid polymer electrolyte membrane; a first separator superposed against a surface of the oxidant electrode forming an oxidant gas flow passage; and a second separator superposed against a surface of the fuel electrode forming a fuel gas flow passage. The first separator and the second separator are composed of rectangular thin metal plates, with outer peripheral edges of the first separator and the second separator each bending inclined towards a secondary face thereof on an opposite side of a primary face thereof that is superposed against the membrane/electrode assembly, thereby integrally forming a reinforcing rib.Type: GrantFiled: July 26, 2005Date of Patent: May 31, 2011Assignee: Tokai Rubber Industries, Ltd.Inventors: Yutaka Ishioka, Yasuhiko Mihara, Ryo Hirai
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Patent number: 7534518Abstract: A cell for use in a solid polymer electrolyte fuel cell, including a membrane electrode assembly including a fuel electrode and an oxidant electrode disposed on either side of a solid polymer electrolyte membrane, the assembly being sandwiched from either side by a first separator and a second separator to give a stacked construction. The first and second separator have a planar shape slightly larger than a solid polymer electrolyte membrane, with primary face seal rubber layers affixed to outer peripheral edge portions of primary faces of the first and second separator. Thus, an outer peripheral edge portion of the solid polymer electrolyte membrane projecting outwardly beyond the fuel and oxidant electrodes are held clamped fluid-tightly between the first and second separators by means of the primary face seal rubber layers of the first and second separators.Type: GrantFiled: July 26, 2005Date of Patent: May 19, 2009Assignee: Tokai Rubber Industries, Ltd.Inventors: Yutaka Ishioka, Yasuhiko Mihara, Ryo Hirai
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Publication number: 20070184327Abstract: A unit cell for use in a solid polymer electrolyte fuel cell comprising: a membrane/electrode assembly including a fuel electrode and an oxidant electrode disposed on either side of a solid polymer electrolyte membrane, the assembly being sandwiched from either side by a first separator and a second separator to give a stacked construction to form therebetween a fuel gas flow passage and an oxidant gas flow passage. The solid polymer electrolyte membrane has a projecting portion projecting outwardly beyond the fuel electrode and the oxidant electrode, and the projecting portion is coated by a reinforcing resin member. Connecting grooves formed on a primary face of the separators connecting both ends of the fuel gas/oxidant gas flow passages with a fuel/oxidant gas feed/discharge ports, respectively. The reinforcing resin member is placed so as to bridge openings of the connecting grooves in order to give a tunnel construction to the connecting grooves.Type: ApplicationFiled: February 8, 2007Publication date: August 9, 2007Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Yutaka Ishioka, Hideaki Tanahashi, Yasuhiko Mihara
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Publication number: 20070031719Abstract: A separator for use in a solid polymer electrolyte fuel cell, including a membrane/electrode assembly including a fuel electrode and an oxidant electrode disposed on either side of a solid polymer electrolyte membrane; a first separator superposed against a surface of the oxidant electrode forming an oxidant gas flow passage; and a second separator superposed against a surface of the fuel electrode forming a fuel gas flow passage. The first separator and the second separator are composed of rectangular thin metal plates, with outer peripheral edges of the first separator and the second separator each bending inclined towards a secondary face thereof on an opposite side of a primary face thereof that is superposed against the membrane/electrode assembly, thereby integrally forming a reinforcing rib.Type: ApplicationFiled: July 26, 2005Publication date: February 8, 2007Applicant: Tokai Rubber Industries, Ltd.Inventors: Yutaka Ishioka, Yasuhiko Mihara, Ryo Hirai
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Publication number: 20060024560Abstract: A separator for use in a solid polymer electrolyte fuel cell, including a membrane/electrode assembly including a fuel electrode and an oxidant electrode disposed on either side of a solid polymer electrolyte membrane; a first separator superposed against a surface of the fuel electrode forming a fuel gas flow passage; and a second separator superposed against a surface of the oxidant electrode forming an oxidant gas flow passage. A single type metal separator is produced by subjecting a rectangular thin metal plate to punching and drawing by means of pressing to produce upper and lower through-holes of a pair of opposite sides, as well as forming a plurality of recesses extending substantially parallel to connect the upper through hole of a first opposing side with the lower through-hole of an other opposing side. The single type metal separator, when flipped front to back, can be used as both the first and second separators.Type: ApplicationFiled: July 26, 2005Publication date: February 2, 2006Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Yutaka Ishioka, Yasuhiko Mihara, Ryo Hirai
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Publication number: 20060024556Abstract: A cell for use in a solid polymer electrolyte fuel cell, including a membrane/electrode assembly including a fuel electrode and an oxidant electrode disposed on either side of a solid polymer electrolyte membrane, the assembly being sandwiched from either side by a first separator and a second separator to give a stacked construction. The first and second separator have a planar shape slightly larger than a solid polymer electrolyte membrane, with primary face seal rubber layers being affixed to outer peripheral edge portions of primary faces of the first and second separator superposed against the membrane/electrode assembly. Thus, an outer peripheral edge portion of the solid polymer electrolyte membrane projecting outwardly beyond the fuel and oxidant electrodes are held clamped fluid-tightly between the first and second separators by means of the primary face seal rubber layers of the first and second separators.Type: ApplicationFiled: July 26, 2005Publication date: February 2, 2006Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Yutaka Ishioka, Yasuhiko Mihara, Ryo Hirai
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Patent number: 5080334Abstract: A sliding type bushing including an inner sleeve having an axially intermediate large-diameter portion, a race disposed radially outwardly of the inner sleeve, and radially spaced from the large-diameter portion, and a sliding sleeve formed of a fiber reinforced resin material between the large-diameter portion and the race. The sliding sleeve has an outer surface fixed to the race, and an inner surface which faces an outer surface of the large-diameter portion with a predetermined clearance therebetween, such that the sliding and inner sleeves are freely slidable relative to each other about the axis of the bushing.Type: GrantFiled: February 15, 1991Date of Patent: January 14, 1992Assignee: Tokai Rubber Industries, Ltd.Inventors: Yasuhiko Mihara, Kiyohiko Yoshida, Ryouji Kanda