Patents by Inventor Katsuhiko Katagiri
Katsuhiko Katagiri 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: 11724628Abstract: A vehicle seat capable of exhibiting both performances of regulating an input of a load and reducing vibration is provided. One aspect of the present disclosure is a vehicle seat including a coupling structure coupling a first member and a second member. The coupling structure includes a bolt inserted through the first member and the second member, an auxiliary member arranged so as to hold the first member between the auxiliary member and the second member in an axial direction of the bolt, a first elastic element arranged between the first member and the second member in the axial direction, the first elastic element being in contact with the first member and the second member, and a second elastic element arranged between the first member and the auxiliary member in the axial direction, the second elastic element being in contact with the first member and the auxiliary member.Type: GrantFiled: April 26, 2022Date of Patent: August 15, 2023Assignees: TOYOTA BOSHOKU KABUSHIKI KAISHA, SUMITOMO RIKO COMPANY LIMITEDInventors: Yoshiyuki Kumazaki, Koji Kimura, Yoshihiro Motoi, Katsuhiko Katagiri
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Publication number: 20230202364Abstract: Provided is a vehicle seat capable of providing its coupling structure with a vibration reducing function at a low cost. One aspect of the present disclosure provides a vehicle seat including a cushion frame. The cushion frame includes a first member and a second member, and a coupling structure coupling the first and second members to each other. The coupling structure includes a first collar having a cylindrical shape and fixed to the first member, a second collar having a cylindrical shape and inserted in the first collar, a bolt inserted through the second collar, a first elastic element arranged between the first collar and the second member in an axial direction of the bolt, and a second elastic element held between the first and second collars in a radial direction of the bolt. The first collar has an inner diameter changing along an axial direction of the first collar.Type: ApplicationFiled: December 19, 2022Publication date: June 29, 2023Applicants: TOYOTA BOSHOKU KABUSHIKI KAISHA, SUMITOMO RIKO COMPANY LIMITEDInventors: Yoshiyuki KUMAZAKI, Katsuhiko KATAGIRI
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Publication number: 20220348122Abstract: A vehicle seat capable of exhibiting both performances of regulating an input of a load and reducing vibration is provided. One aspect of the present disclosure is a vehicle seat including a coupling structure coupling a first member and a second member. The coupling structure includes a bolt inserted through the first member and the second member, an auxiliary member arranged so as to hold the first member between the auxiliary member and the second member in an axial direction of the bolt, a first elastic element arranged between the first member and the second member in the axial direction, the first elastic element being in contact with the first member and the second member, and a second elastic element arranged between the first member and the auxiliary member in the axial direction, the second elastic element being in contact with the first member and the auxiliary member.Type: ApplicationFiled: April 26, 2022Publication date: November 3, 2022Applicants: TOYOTA BOSHOKU KABUSHIKI KAISHA, SUMITOMO RIKO COMPANY LIMITEDInventors: Yoshiyuki KUMAZAKI, Koji KIMURA, Yoshihiro MOTOI, Katsuhiko KATAGIRI
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Patent number: 9551396Abstract: Provided is a vibration damping device having a novel structure and that can have a greatly increased load strength resistance without a concomitant increase in the number of components or size at a stopper mechanism. The structure is such that first and second stopper portions having a hanging plate part and a dip part are provided to a pair of opposing sides of a stopper plate of a vibration damping device, whereas a pair of side plate portions extending between the first and second stopper portions are provided to the other pair of opposing sides of the stopper plate, and openings at both sides of the first and second stopper portions are closed by the pair of side plate portions.Type: GrantFiled: June 2, 2014Date of Patent: January 24, 2017Assignees: SUMITOMO RIKO COMPANY LIMITED, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Noriaki Yoshii, Hiroki Mizukawa, Yorishige Shimizu, Hiroyuki Ichikawa, Katsuhiko Katagiri, Shinji Komura
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Publication number: 20160116018Abstract: Provided is a vibration damping device having a novel structure and that can have a greatly increased load strength resistance without a concomitant increase in the number of components or size at a stopper mechanism. The structure is such that first and second stopper portions having a hanging plate part and a dip part are provided to a pair of opposing sides of a stopper plate of a vibration damping device, whereas a pair of side plate portions extending between the first and second stopper portions are provided to the other pair of opposing sides of the stopper plate, and openings at both sides of the first and second stopper portions are closed by the pair of side plate portions.Type: ApplicationFiled: June 2, 2014Publication date: April 28, 2016Applicants: Sumitomo Riko Company Limited, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Noriaki YOSHII, Hiroki MIZUKAWA, Yorishige SHIMIZU, Hiroyuki ICHIKAWA, Katsuhiko KATAGIRI, Shinji KOMURA
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Patent number: 6991077Abstract: A vibration-damping device includes: a damper mass having a housing member with an accommodation space, an independent mass member housed within the accommodation space with a slight spacing therebetween so that the independent mass member is independent of the housing member and is freely displaceable within the accommodation space of the housing member to come into impact on the housing member via an elastic member; and a metallic spring member to be fixed at a plurality of fixing portions thereof on the vibrative member for elastically supporting the damping mass vibrative member, such that the housing member of the damper mass is fixed to a portion of the metallic spring member through which a principal elastic axis of the metallic spring member extends, and that a center of gravity of the damper mass is located on the principal elastic axis of the metallic spring member.Type: GrantFiled: September 26, 2002Date of Patent: January 31, 2006Assignee: Tokai Rubber Industries, Ltd.Inventors: Hajime Maeno, Katsuhiko Katagiri
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Patent number: 6755401Abstract: A fluid-filled vibration-damping device includes an elastic body elastically connecting a first and a second mounting member so as to close one open-end portion of the second mounting member, and a partition member assembled with the second mounting member on one side thereof to form therebetween a pressure-receiving chamber partially defined by the elastic body and assembled with a fixing member on the other side thereof to form an equilibrium chamber partially defined by a flexible layer supported by one pen-end portion of the fixing member. The partition member includes a first and second fixing grooves axially spaced apart from each other with an intermediate portion therebetween, to which the other open-end portions of the second mounting and fixing members are respectively press-fitted, and an air passage for connecting a working air chamber to an external air conduit is open in the intermediate portion.Type: GrantFiled: July 15, 2002Date of Patent: June 29, 2004Assignee: Tokai Rubber Industries, Ltd.Inventors: Shouji Akasa, Katsuhiko Katagiri, Yuichi Ogawa, Hideki Maehashi, Akio Saiki
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Publication number: 20030062230Abstract: A vibration-damping device includes: a damper mass having a housing member with an accommodation space, an independent mass member housed within the accommodation space with a slight spacing therebetween so that the independent mass member is independent of the housing member and is freely displaceable within the accommodation space of the housing member to come into impact on the housing member via an elastic member; and a metallic spring member to be fixed at a plurality of fixing portions thereof on the vibrative member for elastically supporting the damping mass vibrative member, such that the housing member of the damper mass is fixed to a portion of the metallic spring member through which an principal elastic axis of the metallic spring member extends, and that a center of gravity of the damper mass is located on the principal elastic axis of the metallic spring member.Type: ApplicationFiled: September 26, 2002Publication date: April 3, 2003Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Hajime Maeno, Katsuhiko Katagiri
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Publication number: 20030011115Abstract: A fluid-filled vibration damping device includes an elastic body elastically connecting a first and a second mounting member so as to close one open-end portion of the second mounting member, and a partition member assembled with the second mounting member on one side thereof to form therebetween a pressure-receiving chamber partially defined by the elastic body and assembled with a fixing member on the other side thereof to form an equilibrium chamber partially defined by a flexible layer supported by the fixing member. The partition member includes a fixing groove to which open end peripheral portions of the cylindrical portion of the second mounting and the fixing sleeve portion of the fixing members are press-fitted, whereby the peripheral portion of the flexible layer is fixed to the partition member.Type: ApplicationFiled: July 15, 2002Publication date: January 16, 2003Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Shouji Akasa, Katsuhiko Katagiri, Yuichi Ogawa, Hideki Maehashi, Akio Saiki
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Patent number: 5769402Abstract: A fluid-filled elastic mount including an elastic body elastically connecting first and second mounting members and partially defining a pressure-receiving chamber filled with a fluid, a flexible diaphragm partially defining an equilibrium chamber filled with the fluid and displaceable to permit a volume change of the equilibrium chamber, a first orifice passage for fluid communication between the two chambers, a movable member disposed between the two chambers and displaceable or deformable to permit relative volume changes of the two chambers, a second and a third orifice passage formed between the movable member and one of the two chambers for permitting the fluid to flow therethrough based on displacement or deformation of the movable member.Type: GrantFiled: May 22, 1997Date of Patent: June 23, 1998Assignee: Tokai Rubber Industries, Ltd.Inventors: Akiyoshi Ide, Katsuhiko Katagiri