Patents by Inventor Yasuaki Nagai
Yasuaki Nagai 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: 8167339Abstract: There is provided a resin tube-equipped quick connector capable of connecting a fuel-transporting resin tube to a mating pipe without hindrance even if the resin tube has a small diameter. The quick connector is constructed such that it includes a connector body having a press-fitting portion, and a retainer. On the other hand, a press-fit undergoing portion of the resin tube into which the press-fitting portion is to be press-fitted is beforehand expanded in tube diameter prior to the press-fitting, and the press-fitting portion is press-fitted into the expanded press-fit undergoing portion in a withdrawal-preventing condition to provide the quick connector equipped with the resin tube.Type: GrantFiled: December 20, 2004Date of Patent: May 1, 2012Assignees: Tokai Rubber Industries, Ltd., Honda Motor Co., Ltd.Inventors: Katsuichi Yagisawa, Yasuaki Nagai, Kazuhiro Kato, Hirokazu Kitamura
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Publication number: 20110254235Abstract: A laminated-type metal gasket material plate includes a metal plate having two sides, a rubber layer, a layer of a surface preparation agent free from hexavalent chromium, and an adhesive layer. The layer of the surface preparation agent is coated on at least one side of the plate. The adhesive layer attaches the rubber layer and is provided on the layer of the surface preparation agent. Both the adhesive layer and the rubber layer contain a rust-resistant pigment.Type: ApplicationFiled: June 10, 2011Publication date: October 20, 2011Inventors: Tsunehiko Abe, Tomokazu Nakanishi, Shingo Watanabe, Yoshiharu Takada, Ichiro Goto, Shinsuke Mochizuki, Kenji Okubo, Yasuaki Nagai
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Patent number: 7989027Abstract: The present invention is intended to provide a metal gasket material plate with which exfoliation of the coating or blister can be prevented even if it is used in the presence of an electrolyte aqueous solution and which can be manufactured through a process without use of hexavalent chromium in consideration of the environment, etc. The present, invention relates to a metal gasket material plate comprising a metal plate 1 having a rubber layer 4 on one side or both sides thereof through an adhesive layer 3, wherein a rust-resistant pigment is added to both of said adhesive layer 3 and said rubber layer 4.Type: GrantFiled: December 28, 2007Date of Patent: August 2, 2011Assignees: Nippon Leakless Industry Co., Ltd., Sanshin Industries Co., Ltd., Honda Motor Co., Ltd.Inventors: Tsunehiko Abe, Tomokazu Nakanishi, Shingo Watanabe, Yoshiharu Takada, Ichiro Goto, Shinsuke Mochizuki, Kenji Okubo, Yasuaki Nagai
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Patent number: 7624993Abstract: The invention provides a novel dual-membered suctional gasket which has a reliable function to fit and fix the gasket to an object to be sealed, and also provides an effective suction effect and air venting function. For that purpose, the gasket which has a function to prevent fluid from leaking when compressed, comprises an inner sealing member 1 and outer sealing member 2 arranged on a surface perpendicular to a compressing direction; and a plurality of connecting members 3 for connecting and fixing the inner sealing member 1 and the outer sealing member 2 together. Suction cup structures are formed, when a proper amount of air closed between the inner sealing member and the outer sealing member is vented from the inner sealing member, the outer sealing member or the both sealing members by compressing the dual-membered gasket.Type: GrantFiled: July 27, 2005Date of Patent: December 1, 2009Assignees: Kokoku Intech Co. Ltd., Honda Giken Kogyo Kabushiki KaishaInventors: Yutaka Kikuchi, Hirofumi Hino, Masaki Ueno, Masaaki Yamaguchi, Yasuaki Nagai
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Publication number: 20080211197Abstract: (Problems to be Solved) The present invention is intended to provide a metal gasket material plate with which exfoliation of the coating or blister can be prevented even if it is used in the presence of an electrolyte aqueous solution and which can be manufactured through a process without use of hexavalent chromium in consideration of the environment, etc. (Means for Solving the Problems) The present, invention relates to a metal gasket material plate comprising a metal plate 1 having a rubber layer 4 on one side or both sides thereof through an adhesive layer 3, wherein a rust-resistant pigment is added to both of said adhesive layer 3 and said rubber layer 4.Type: ApplicationFiled: December 28, 2007Publication date: September 4, 2008Inventors: Tsunehiko Abe, Tomokazu Nakanishi, Shingo Watanabe, Yoshiharu Takada, Ichiro Goto, Shinsuke Mochizuki, Kenji Okubo, Yasuaki Nagai
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Publication number: 20080067760Abstract: The invention provides a novel dual-membered suctional gasket which has a reliable function to fit and fix the gasket to an object to be sealed, and also provides an effective suction effect and air venting function. For that purpose, the gasket which has a function to prevent fluid from leaking when compressed, comprises an inner sealing member 1 and outer sealing member 2 arranged on a surface perpendicular to a compressing direction; and a plurality of connecting members 3 for connecting and fixing the inner sealing member 1 and the outer sealing member 2 together. Suction cup structures are formed, when a proper amount of air closed between the inner sealing member and the outer sealing member is vented from the inner sealing member, the outer sealing member or the both sealing members by compressing the dual-membered gasket.Type: ApplicationFiled: July 27, 2005Publication date: March 20, 2008Applicant: KOKOKU INTECH CO., LTDInventors: Yutaka Kikuchi, Hirofumi Hino, Masaki Ueno, Masaaki Yamaguchi, Yasuaki Nagai
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Publication number: 20070200339Abstract: There is provided a resin tube-equipped quick connector capable of connecting a fuel-transporting resin tube to a mating pipe without hindrance even if the resin tube has a small diameter. The quick connector 16 is constructed such that it includes a connector body 18 having a press-fitting portion 28, and a retainer 20. On the other hand, a press-fit undergoing portion 10A of the resin tube 10 into which the press-fitting portion 28 is to be press-fitted is beforehand expanded in tube diameter prior to the press-fitting, and the press-fitting portion 28 is press-fitted into the expanded press-fit undergoing portion 10A in a withdrawal-preventing condition to provide the quick connector 16 equipped with the resin tube 10.Type: ApplicationFiled: December 20, 2004Publication date: August 30, 2007Inventors: Katsuichi Yagisawa, Yasuaki Nagai, Kazuhiro Kato, Hirokazu Kitamura
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Patent number: 7040294Abstract: To manufacture fuel piping for connecting a fuel tank and a drive unit including an engine using a resin material at a low cost and to cause the fuel piping to suitably follow the movement of the fuel tank and the drive unit when the vehicle is being operated. A fuel piping includes connectors at both ends of a pipe member formed of resin material into a thin tubular shape for connecting between a fuel tank and a fuel injection apparatus for supplying fuel to an engine of a two-wheel vehicle or the like via the connectors. One or more bent portions are formed at the midsection of the pipe member of the fuel piping.Type: GrantFiled: December 2, 2004Date of Patent: May 9, 2006Assignee: Honda Motor Co., Ltd.Inventors: Katsuichi Yagisawa, Katsunori Komuro, Yasuaki Nagai, Toshikazu Saito, Masaki Ueno, Minoru Ueda
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Publication number: 20050133010Abstract: To manufacture fuel piping for connecting a fuel tank and a drive unit including an engine using a resin material at a low cost and to cause the fuel piping to suitably follow the movement of the fuel tank and the drive unit when the vehicle is being operated. A fuel piping includes connectors at both ends of a pipe member formed of resin material into a thin tubular shape for connecting between a fuel tank and a fuel injection apparatus for supplying fuel to an engine of a two-wheel vehicle or the like via the connectors. One or more bent portions are formed at the midsection of the pipe member of the fuel piping.Type: ApplicationFiled: December 2, 2004Publication date: June 23, 2005Applicant: HONDA MOTOR CO., LTD.Inventors: Katsuichi Yagisawa, Katsunori Komuro, Yasuaki Nagai, Toshikazu Saito, Masaki Ueno, Minoru Ueda
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Patent number: 6254277Abstract: There is provided a roller bearing in which contact stress between a roller and a raceway is uniformized by optimizing a configuration of a clearance between the roller and the raceway. A configuration of an outer circumferential surface (8) of a tapered roller (6) of a tapered roller bearing (1) is defined so that a clearance of Y(x)=kYp(x), which results from multiplying an equation Yp(x) for uniformizing contact stress between infinite-width plate and tapered roller by a positive number k=1.5-10, is formed between the raceway surface (4, 5) and the outer circumferential surface (8) of the tapered roller (6). The tapered roller (6) relaxes concentration of contact stresses, improving the durability.Type: GrantFiled: December 7, 1999Date of Patent: July 3, 2001Assignee: Koyo Seiko Co., Ltd.Inventors: Yasuaki Nagai, Kenji Shitsukawa, Kenji Asano, Masamichi Shibata