Patents by Inventor Ryoichi Yoshitomi
Ryoichi Yoshitomi 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: 20160344058Abstract: A second end plate constituting a fuel cell stack is provided with a cooling medium supply manifold member and a cooling medium discharge manifold member. The second end plate is also provided with a mount member that affixes the fuel cell stack to an automobile body frame and covers the cooling medium discharge manifold member.Type: ApplicationFiled: January 23, 2015Publication date: November 24, 2016Inventors: Hideharu NAITO, Yusuke NARA, Hidetada KOJIMA, Choichi ISHIKAWA, Ryoichi YOSHITOMI
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Patent number: 9371009Abstract: A mount structure includes side mounts for holding a fuel cell stack to thereby fix the fuel cell stack to first vehicle frames, and rear mounts for fixing the fuel cell stack to a second vehicle frame. The strength of the side mounts is lower than the strength of the rear mounts. In the structure, when an external load is applied to a fuel cell electric vehicle, the side mounts are broken prior to breakage of the rear mounts.Type: GrantFiled: March 4, 2015Date of Patent: June 21, 2016Assignee: Honda Motor Co., Ltd.Inventors: Choichi Ishikawa, Ryoichi Yoshitomi
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Publication number: 20150251560Abstract: A mount structure includes side mounts for holding a fuel cell stack to thereby fix the fuel cell stack to first vehicle frames, and rear mounts for fixing the fuel cell stack to a second vehicle frame. The strength of the side mounts is lower than the strength of the rear mounts. In the structure, when an external load is applied to a fuel cell electric vehicle, the side mounts are broken prior to breakage of the rear mounts.Type: ApplicationFiled: March 4, 2015Publication date: September 10, 2015Inventors: Choichi ISHIKAWA, Ryoichi YOSHITOMI
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Publication number: 20150244006Abstract: A fuel cell vehicle is equipped with a fuel cell system including a fuel cell stack, a fuel gas unit, and an oxygen-containing gas unit. In the fuel gas unit, two or more fuel gas system members are assembled together. In the oxygen-containing gas unit, two or more oxygen-containing gas system members are assembled together. Such components are assembled together in a state in which the fuel gas unit is interposed between the fuel cell stack and the oxygen-containing gas unit.Type: ApplicationFiled: February 12, 2015Publication date: August 27, 2015Inventors: Ryoichi YOSHITOMI, Kimiaki OHSAWA
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Patent number: 8974985Abstract: A stack hinge is formed by stacking a plurality of plate hinge parts each having the same shape. Each of the plate hinge parts has a tab having a pin through hole for engagement with a joint pin and a joint portion joined to a panel of a unit box. The plate hinge parts are stacked by aligning the pin through holes and fixed together to assemble the plate hinge parts into a single hinge member.Type: GrantFiled: June 6, 2008Date of Patent: March 10, 2015Assignee: Honda Motor Co., Ltd.Inventors: Ryoichi Yoshitomi, Ayumu Ishizuka, Makoto Tsuji, Yositaka Hattori, Shigeru Maniwa, Daisuke Nakagawara
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Patent number: 8846260Abstract: Coolant supply passages and coolant discharge passages, for example, two respectively thereof, are disposed on upper and lower side portions of a first end plate of a fuel cell stack. Grooves are formed on a surface of the first end plate for establishing communication between each of the coolant supply passages and the coolant discharge passages. Air, which is introduced upwardly of the coolant discharge passages, is discharged to the coolant supply passages.Type: GrantFiled: June 4, 2010Date of Patent: September 30, 2014Assignee: Honda Motor Co., Ltd.Inventors: Hideharu Naito, Norihisa Kobayashi, Ryoichi Yoshitomi, Masaaki Sakano, Keisuke Suda, Yasuhiro Watanabe
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Publication number: 20140084195Abstract: A solenoid valve includes first and second attraction portions in the interior of a housing disposed on an upper part of a valve body. A movable iron core, which confronts the first and second attraction portions, is disposed displaceably in the housing. Further, in the interior of the first attraction portion, which is recessed in a concave shape, a first guide body is installed, the first guide body being formed in a cylindrical shape from a non-magnetic material, and a first rod member of the movable iron core is supported displaceably in axial directions by the first guide body. On the other hand, a cylindrically shaped second guide body is disposed on a lower end of the housing, and a second rod member of the movable iron core is supported displaceably in the axial directions by the second guide body.Type: ApplicationFiled: September 26, 2013Publication date: March 27, 2014Applicants: HONDA MOTOR CO., LTD., KEIHIN CORPORATIONInventors: Koji Hakoda, Hideto Hiramoto, Takao Ikenaga, Ryoichi Yoshitomi
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Patent number: 8623570Abstract: A fuel cell stack includes a casing containing a plurality of fuel cell units. A ridge is formed integrally at the center in the width direction of a side panel of the casing. The ridge contacts a load receiver to support the load of the fuel cell units. A plurality of separate reinforcement plates bridging a recess of the back surface of the ridge are provided on the side panel. The reinforcement plates are fixed to the side panel at welding points by spot welding.Type: GrantFiled: December 9, 2009Date of Patent: January 7, 2014Assignee: Honda Motor Co., Ltd.Inventors: Ryoichi Yoshitomi, Ken Takahashi, Masaharu Suzuki
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Patent number: 8247131Abstract: A fuel cell stack includes a load receiver provided at an outer end of a fuel cell unit, a guide receiver provided in a box, and a pressure receiver provided in at least one corner in the box. The guide receiver abuts against the load receiver for receiving the external load. The pressure receiver protrudes toward the fuel cell unit. The pressure receiver abuts against a corner of the fuel cell unit for receiving the load. The pressure receiver has a resin receiver, and the resin receiver abuts against a curved portion of the fuel cell unit for supporting the fuel cell unit.Type: GrantFiled: June 11, 2008Date of Patent: August 21, 2012Assignee: Honda Motor Co., Ltd.Inventors: Ken Takahashi, Ryoichi Yoshitomi, Daisuke Wachi, Keisuke Andou, Ayumu Ishizuka, Tadashi Nishiyama
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Patent number: 8221929Abstract: A fuel cell stack includes a stack body formed by stacking a plurality of unit cells, and a casing including end plates. Components of the stack body are held together in the casing. Side plates and angle members of the casing form an outer profile line, and the end plates are positioned inside the outer profile line. Corners of insulating plates protrude outwardly beyond corners of the end plates, and are positioned inside the inner wall surfaces of the corners of the casing.Type: GrantFiled: May 27, 2009Date of Patent: July 17, 2012Assignee: Honda Motor Co., Ltd.Inventors: Ryoichi Yoshitomi, Ken Takahashi, Go Morimoto
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Patent number: 8048575Abstract: A fuel cell system that is compact and has stabilized performance is provided. The fuel cell system includes two fuel cell stacks or a first fuel cell stack (31) and a second fuel cell stack (32), a high-pressure hydrogen tank (11) as a hydrogen supplying device for supplying hydrogen to the first and second fuel cell stacks (31, 32), a compressor (12) as an air supplying device for supplying air to the fuel cell stack, and a humidifier (20) for humidifying air to be supplied to the first and second fuel cell stacks (31, 32). The humidifier (20) is disposed between the first and second fuel cell stacks (31, 32); a supply air exhaust port of the humidifier (20) and air supply ports (Q1) of the first and second fuel cell stacks (31, 32) are connected by air supply pipes (51) having the same length.Type: GrantFiled: February 8, 2011Date of Patent: November 1, 2011Assignee: Honda Motor Co., Ltd.Inventors: Yoshio Kusano, Toshikatsu Katagiri, Ryoichi Yoshitomi, Kenji Nagumo, Motohiro Suzuki
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Patent number: 8034503Abstract: A casing includes end plates, side plates, and a hinge mechanism for coupling the end plates and the side plates. A power generation area is defined by the distance L1 and the distance L2. When first hinges and second hinges of the hinge mechanism are provided alternately, the first hinges and the second hinges are positioned within the distance L1. Preferably, the length of the shaft of a coupling pin is not more than the length L1. When the first hinges and the second hinges are provided alternately, the first hinges and the second hinges are positioned within the length L2. Preferably, the length of the shaft of a coupling pin is not more than the length L2.Type: GrantFiled: March 21, 2008Date of Patent: October 11, 2011Assignee: Honda Motor Co., Ltd.Inventors: Ryoichi Yoshitomi, Ayumu Ishizuka
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Publication number: 20110129741Abstract: A fuel cell system that is compact and has stabilized performance is provided. The fuel cell system includes two fuel cell stacks or a first fuel cell stack (31) and a second fuel cell stack (32), a high-pressure hydrogen tank (11) as a hydrogen supplying device for supplying hydrogen to the first and second fuel cell stacks (31, 32), a compressor (12) as an air supplying device for supplying air to the fuel cell stack, and a humidifier (20) for humidifying air to be supplied to the first and second fuel cell stacks (31, 32). The humidifier (20) is disposed between the first and second fuel cell stacks (31, 32); a supply air exhaust port of the humidifier (20) and air supply ports (Q1) of the first and second fuel cell stacks (31, 32) are connected by air supply pipes (51) having the same length.Type: ApplicationFiled: February 8, 2011Publication date: June 2, 2011Applicant: Honda Motor Co., Ltd.Inventors: Yoshio Kusano, Toshikatsu Katagiri, Ryoichi Yoshitomi, Kenji Nagumo, Motohiro Suzuki
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Patent number: 7906241Abstract: A fuel cell system that is compact and has stabilized performance is provided. The fuel cell system includes two fuel cell stacks or a first fuel cell stack (31) and a second fuel cell stack (32), a high-pressure hydrogen tank (11) as a hydrogen supplying device for supplying hydrogen to the first and second fuel cell stacks (31, 32), a compressor (12) as an air supplying device for supplying air to the fuel cell stack, and a humidifier (20) for humidifying air to be supplied to the first and second fuel cell stacks (31, 32). The humidifier (20) is disposed between the first and second fuel cell stacks (31, 32); a supply air exhaust port of the humidifier (20) and air supply ports (Q1) of the first and second fuel cell stacks (31, 32) are connected by air supply pipes (51) having the same length.Type: GrantFiled: October 1, 2004Date of Patent: March 15, 2011Assignee: Honda Motor Co., Ltd.Inventors: Yoshio Kusano, Toshikatsu Katagiri, Ryoichi Yoshitomi, Kenji Nagumo, Motohiro Suzuki
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Publication number: 20100310958Abstract: Coolant supply passages and coolant discharge passages, for example, two respectively thereof, are disposed on upper and lower side portions of a first end plate of a fuel cell stack. Grooves are formed on a surface of the first end plate for establishing communication between each of the coolant supply passages and the coolant discharge passages. Air, which is introduced upwardly of the coolant discharge passages, is discharged to the coolant supply passages.Type: ApplicationFiled: June 4, 2010Publication date: December 9, 2010Applicant: HONDA MOTOR CO., LTD.Inventors: Hideharu NAITO, Norihisa KOBAYASHI, Ryoichi YOSHITOMI, Masaaki SAKANO, Keisuke SUDA, Yasuhiro WATANABE
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Patent number: 7736816Abstract: A fuel cell stack includes a stack body formed by stacking a plurality of unit cells in a horizontal direction. The stack body is held in a casing including end plates. Further, the casing includes a plurality of side plates provided on sides of the stack body. The end plates and the side plates are coupled by coupling pins. Each of the side plates has a plurality of separate second coupling portions, and the coupling pins are inserted into the coupling portions.Type: GrantFiled: December 20, 2007Date of Patent: June 15, 2010Assignee: Honda Motor Co., Ltd.Inventors: Ryoichi Yoshitomi, Ayumu Ishizuka, Makoto Tsuji
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Publication number: 20100143766Abstract: A fuel cell stack includes a casing containing a plurality of fuel cell units. A ridge is formed integrally at the center in the width direction of a side panel of the casing. The ridge contacts a load receiver to support the load of the fuel cell units. A plurality of separate reinforcement plates bridging a recess of the back surface of the ridge are provided on the side panel. The reinforcement plates are fixed to the side panel at welding points by spot welding.Type: ApplicationFiled: December 9, 2009Publication date: June 10, 2010Applicant: HONDA MOTOR CO., LTD.Inventors: Ryoichi YOSHITOMI, Ken TAKAHASHI, Masaharu SUZUKI
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Publication number: 20090297920Abstract: A fuel cell stack includes a stack body formed by stacking a plurality of unit cells, and a casing including end plates. Components of the stack body are held together in the casing. Side plates and angle members of the casing form an outer profile line, and the end plates are positioned inside the outer profile line. Corners of insulating plates protrude outwardly beyond corners of the end plates, and are positioned inside the inner wall surfaces of the corners of the casing.Type: ApplicationFiled: May 27, 2009Publication date: December 3, 2009Applicant: Honda Motor Co., Ltd.Inventors: Ryoichi YOSHITOMI, Ken TAKAHASHI, Go MORIMOTO
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Publication number: 20080305368Abstract: A fuel cell stack includes a load receiver provided at an outer end of a fuel cell unit, a guide receiver provided in a box, and a pressure receiver provided in at least one corner in the box. The guide receiver abuts against the load receiver for receiving the external load. The pressure receiver protrudes toward the fuel cell unit. The pressure receiver abuts against a corner of the fuel cell unit for receiving the load. The pressure receiver has a resin receiver, and the resin receiver abuts against a curved portion of the fuel cell unit for supporting the fuel cell unit.Type: ApplicationFiled: June 11, 2008Publication date: December 11, 2008Applicant: Honda Motor Co., Ltd.Inventors: Ken Takahashi, Ryoichi Yoshitomi, Daisuke Wachi, Keisuke Andou, Ayumu Ishizuka, Tadashi Nishiyama
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Publication number: 20080305383Abstract: A stack hinge is formed by stacking a plurality of plate hinge parts each having the same shape. Each of the plate hinge parts has a tab having a pin through hole for engagement with a joint pin and a joint portion joined to a panel of a unit box. The plate hinge parts are stacked by aligning the pin through holes and fixed together to assemble the plate hinge parts into a single hinge member.Type: ApplicationFiled: June 6, 2008Publication date: December 11, 2008Applicant: Honda Motor Co., Ltd.Inventors: Ryoichi Yoshitomi, Ayumu Ishizuka, Makoto Tsuji, Yositaka Hattori, Shigeru Maniwa, Daisuke Nakagawara