Patents by Inventor Noboru Arakawa
Noboru Arakawa 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: 8651465Abstract: A method of manufacturing a bushing assembly that includes a vibration damping rubber bushing having a round cylindrical resin outer cylinder, which is assembled by press fitting an outside peripheral face of the outer cylinder in an axial direction into a cylindrical metal mated component having a circular inside peripheral face. The vibration damping rubber bushing is press fit into the mated component with a rigid powder composed of material harder than the outer cylinder deposited in a section of the resin outer cylinder that is situated on the outside peripheral face and that mates with the inside peripheral face of the mated component, and the outer cylinder and the mated component are assembled in a mated condition such that the rigid powder intervenes between the outside peripheral face of the outer cylinder and the inside peripheral face of the mated component.Type: GrantFiled: January 29, 2010Date of Patent: February 18, 2014Assignee: Tokai Rubber Industries, Ltd.Inventors: Tatsuya Ito, Noboru Arakawa
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Publication number: 20110109027Abstract: A method of manufacturing a bushing assembly that includes a vibration damping rubber bushing having a round cylindrical resin outer cylinder, which is assembled by press fitting an outside peripheral face of the outer cylinder in an axial direction into a cylindrical metal mated component having a circular inside peripheral face. The vibration damping rubber bushing is press fit into the mated component with a rigid powder composed of material harder than the outer cylinder deposited in a section of the resin outer cylinder that is situated on the outside peripheral face and that mates with the inside peripheral face of the mated component, and the outer cylinder and the mated component are assembled in a mated condition such that the rigid powder intervenes between the outside peripheral face of the outer cylinder and the inside peripheral face of the mated component.Type: ApplicationFiled: January 29, 2010Publication date: May 12, 2011Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Tatsuya Ito, Noboru Arakawa
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Patent number: 7207553Abstract: An engine mount having an upper and a lower mounting member connected by a rubber elastic body disposed therebetween, to be installed on a vehicle with a opposition direction of the upper and lower mounting member inclined with respect to a vertical, and an adjustment plate member affixed to the upper mounting member with the adjustment plate member and the lower mounting member elastically connected by the rubber elastic body disposed therebetween. An upper stopper portion is integrally formed by bending a lower end portion of the adjustment plate member toward the upper mounting member so that the upper stopper portion extends generally on a horizontal when installed on the vehicle. A lower stopper portion disposed on the lower mounting member is situated below the upper stopper portion with a gap therebetween. A bound cushion rubber is formed on the upper stopper portion and/or lower stopper portion.Type: GrantFiled: July 27, 2005Date of Patent: April 24, 2007Assignee: Tokai Rubber Industries, Ltd.Inventors: Noboru Arakawa, Jyoji Tsutsumida
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Patent number: 7182306Abstract: An engine mount including a rubber elastic body connecting an upper and lower mounting plate fixture and a rebound stopper mechanism having an upper stopper integrally formed with an upper mounting plate fixture and a lower stopper integrally formed with a lower mounting plate fixture. The upper stopper is bolted to a power unit at a position deviating more toward the inside of the power unit than a position of an elastic main axis of the rubber elastic body on the upper mounting plate fixture so that the stopper mechanism in the rebound direction is positioned generally vertically below the position where the upper stopper is bolted to the power unit, whereas the lower stopper is bolted to the vehicle body at a position deviating more toward the inside of the power unit than the position of the elastic main axis of the rubber elastic body on the lower fixture.Type: GrantFiled: February 7, 2005Date of Patent: February 27, 2007Assignees: Tokai Rubber Industries, Ltd., Nissan Motor Co., Ltd.Inventors: Jyoji Tsutsumida, Noboru Arakawa, Akihiro Mayama, Kazushi Saikusa
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Publication number: 20060022390Abstract: An engine mount having an upper and a lower mounting member connected by a rubber elastic body disposed therebetween, to be installed on a vehicle with a opposition direction of the upper and lower mounting member inclined with respect to a vertical, and an adjustment plate member affixed to the upper mounting member with the adjustment plate member and the lower mounting member elastically connected by the rubber elastic body disposed therebetween. An upper stopper portion is integrally formed by bending a lower end portion of the adjustment plate member toward the upper mounting member so that the upper stopper portion extends generally on a horizontal when installed on the vehicle. A lower stopper portion disposed on the lower mounting member is situated below the upper stopper portion with a gap therebetween. A bound cushion rubber is formed on the upper stopper portion and/or lower stopper portion.Type: ApplicationFiled: July 27, 2005Publication date: February 2, 2006Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Noboru Arakawa, Jyoji Tsutsumida
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Publication number: 20050178943Abstract: An engine mount including a rubber elastic body connecting an upper and lower mounting plate fixture and a rebound stopper mechanism having an upper stopper integrally formed with an upper mounting plate fixture and a lower stopper integrally formed with a lower mounting plate fixture. The upper stopper is bolted to a power unit at a position deviating more toward the inside of the power unit than a position of an elastic main axis of the rubber elastic body on the upper mounting plate fixture so that the stopper mechanism in the rebound direction is positioned generally vertically below the position where the upper stopper is bolted to the power unit, whereas the lower stopper is bolted to the vehicle body at a position deviating more toward the inside of the power unit than the position of the elastic main axis of the rubber elastic body on the lower fixture.Type: ApplicationFiled: February 7, 2005Publication date: August 18, 2005Applicants: TOKAI RUBBER INDUSTRIES, LTD., NISSAN MOTOR CO., LTD.Inventors: Jyoji Tsutsumida, Noboru Arakawa, Akihiro Mayama, Kazushi Saikusa
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Patent number: 6517062Abstract: A vibration isolator includes an inner cylindrical metal member, an outer cylindrical metal member located outside the inner cylindrical metal member in a radial direction, and a rubber elastic member interposed between the inner and outer cylindrical metal members so as to elastically connect between these metal members, and is supported by a support metal member forced and fixed into an axial hole of the inner cylindrical metal member. The inner cylindrica metal member is coaxially bulged in a radial direction.Type: GrantFiled: March 7, 2000Date of Patent: February 11, 2003Assignee: Tokai Rubber Industries, Ltd.Inventors: Naohito Kuwayama, Noboru Arakawa
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Publication number: 20020053763Abstract: A vibration isolator includes: an inner cylindrical metal member 10; a stopper member 13 which is fixed at its axial intermediate position and is projected into a vibration input direction; an outer cylindrical metal member 28 arranged outside the inner cylindrical metal member; a rubber elastic member 20 which elastically connects between the inner and outer cylindrical metal members; and a support metal member 30 which is forced into an axial hole of the inner cylindrical metal member and has one end projecting from the inner cylindrical metal member. An axial intermediate portion of the inner cylindrical metal member including a locating portion of the stopper member is a large-diameter portion 11 which is slightly bulged into a diametrical direction and has inner and outer diameters slightly larger than inner and outer diameters of other portions.Type: ApplicationFiled: March 7, 2000Publication date: May 9, 2002Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Naohito Kuwayama, Noboru Arakawa