Patents by Inventor Akihiro Mayama
Akihiro Mayama 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).
-
Patent number: 7213801Abstract: In a vibration damping apparatus for supporting an engine on a vehicular body, an elastic member damps a vibration developed from the engine, a stopper is brought in contact with the elastic member to limit a transmission of a fluctuation developed on the engine therethrough, and a vehicular body support member integrated with the elastic member to fix the elastic member on the vehicular body, the elastic member including a stopper fixing portion placed at a first position opposite to a second position faced toward the engine to fix the stopper at the first position and the stopper including a bending portion, one side thereof with respect to the bending portion being fixed onto the engine and the other side thereof with respect thereto being fixed onto the stopper fixing portion of the elastic member so as to grasp the elastic member between both sides of the stopper.Type: GrantFiled: June 17, 2002Date of Patent: May 8, 2007Assignee: Nissan Motor Co., Ltd.Inventor: Akihiro Mayama
-
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
-
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
-
Patent number: 6802498Abstract: A cylindrical mounting apparatus includes: a cylindrical mount having an elastic body elastically connecting an inner and outer sleeve disposed in mutually spaced-apart relation; and a bracket independent of the cylindrical mount and having a pair of support plates opposed to each other with a spacing therebetween. The mount is interposed between the pair of support plates and fastened to the bracket by a mounting bolt extending through a bore of the inner sleeve across the support plates. Two positioning protrusions protrude from an inside surface of one support plate toward the other, and a mounting plate is disposed on one axial end of the inner sleeve extending diametrically. A recessed engaging portion of the mounting plate is brought into engagement with the positioning projections to place the mounting plate in a predetermined position about its center axis on the support plate.Type: GrantFiled: April 30, 2003Date of Patent: October 12, 2004Assignees: Tokia Rubber Industries, Ltd., Nissan Motor Co., Ltd.Inventors: Takashi Makino, Akihiro Mayama
-
Publication number: 20030214085Abstract: Disclosed is a cylindrical mounting apparatus including: a cylindrical mount having an elastic body elastically connecting an inner and outer sleeve disposed in mutually spaced-apart relation; and a bracket independent of said cylindrical mount and having a pair of support plates opposed to each other with a spacing therebetween. The mount is interposed between the pair of support plates and fastened to the bracket by a mounting bolt extending through a bore of the inner sleeve across the support plates. Two positioning protrusions protrude from an inside surface of one support plate toward the other, and a mounting plate is disposed on one axial end of the inner sleeve extending diametrically. A recessed engaging portion of the mounting plate is brought into engagement with the positioning projections to place the mounting plate in a predetermined position about its center axis on the support plate.Type: ApplicationFiled: April 30, 2003Publication date: November 20, 2003Applicants: TOKAI RUBBER INDUSTRIES, LTD., NISSAN MOTOR CO., LTD.Inventors: Takashi Makino, Akihiro Mayama
-
Publication number: 20020195759Abstract: In a vibration damping apparatus for supporting an engine on a vehicular body, an elastic member damps a vibration developed from the engine, a stopper is brought in contact with the elastic member to limit a transmission of a fluctuation developed on the engine therethrough, and a vehicular body support member integrated with the elastic member to fix the elastic member on the vehicular body, the elastic member including a stopper fixing portion placed at a first position opposite to a second position faced toward the engine to fix the stopper at the first position and the stopper including a bending portion, one side thereof with respect to the bending portion being fixed onto the engine and the other side thereof with respect thereto being fixed onto the stopper fixing portion of the elastic member so as to grasp the elastic member between both sides of the stopper.Type: ApplicationFiled: June 17, 2002Publication date: December 26, 2002Applicant: NISSAN MOTOR CO., LTD.Inventor: Akihiro Mayama
-
Patent number: 5076550Abstract: A fluid filled elastomeric damping device has a diaphragm enclosing a working chamber and a diaphragm restraining mechanism for selectively restraining and freeing movement of the diaphragm and thereby varying a damping or operational characteristic of the device. The mechanism includes a pressing plate for pressing a blocking portion of the diaphragm against a seating surface of an outer casing member under a bias of a blocking force generating member and thereby rigidly closing a compensation passage communicating with the working chamber. The diaphragm is restrained in movement by the pressing plate when the solenoid is de-energized and freed in movement when the solenoid is energized.Type: GrantFiled: December 6, 1990Date of Patent: December 31, 1991Assignee: Nissan Motor Co., Ltd.Inventors: Akihiro Mayama, Masaru Takeda