Patents by Inventor Katsuhiro Kondou
Katsuhiro Kondou 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: 8556047Abstract: An automobile hydraulic shock absorber includes a cylinder body, a piston, an upper support, a piston rod, a volume adjustment mechanism, first and second communicating passages, and a pressure-applying mechanism. The piston rod is attached to the upper support via a rubber cushion. The volume adjustment mechanism includes a free piston. The first and second communicating passages communicate the first oil chamber and second oil chamber with each other in the cylinder body via a diaphragm. The pressure-applying mechanism is disposed outside the cylinder body, movement thereof is restricted by the upper support, and the pressure-applying mechanism pushes the piston rod downward.Type: GrantFiled: November 18, 2010Date of Patent: October 15, 2013Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Katsuhiro Kondou, Masashi Maeda, Yutaka Yamazaki
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Patent number: 8196722Abstract: A damper includes a cylinder tube having a first end connected to one portion of a member of an object for damping, and a fixing rod guide arranged to close a second end of the cylinder tube; a movable rod guide fitted on the first end of the cylinder tube; a main piston rod extending from the piston side, the piston fitted in the cylinder tube and passing through the fixing rod guide; a sub-piston rod extending on the piston side and passing through the movable rod guide; and a spring normally biasing the movable rod guide toward the piston. A damping force generation oil passage is arranged to connect first and second oil chambers in a cylinder tube defined by the piston. The number of parts of a through-rod type damper is reduced to simplify a construction thereof and to make the damper compact.Type: GrantFiled: October 30, 2006Date of Patent: June 12, 2012Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Masahiro Satou, Seiji Sawai, Yutaka Yamazaki, Katsuhiro Kondou
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Patent number: 8162334Abstract: A reinforcement device for a vehicle is formed in a slender shape and comprises a medial region with a hydraulic damper. The damper generates a damping force against deformation in the longitudinal direction. The longitudinal direction is defined as a lateral direction of the associated vehicle body. The reinforcement device is removably mounted at both ends to a frame of the vehicle.Type: GrantFiled: December 7, 2010Date of Patent: April 24, 2012Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Katsuhiro Kondou, Masahiro Satou
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Patent number: 8037982Abstract: A shock absorber has a spring positioned within a chamber. The spring provides a spring force on a piston that offsets a hydraulic force such that the forces on the piston are generally balanced when a vehicle is at rest.Type: GrantFiled: July 14, 2005Date of Patent: October 18, 2011Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Masahiro Satou, Katsuhiro Kondou, Seiji Sawai
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Publication number: 20110133520Abstract: A reinforcement device for a vehicle is formed in a slender shape and comprises a medial region with a hydraulic damper. The damper generates a damping force against deformation in the longitudinal direction. The longitudinal direction is defined as a lateral direction of the associated vehicle body. The reinforcement device is removably mounted at both ends to a frame of the vehicle.Type: ApplicationFiled: December 7, 2010Publication date: June 9, 2011Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHAInventors: Katsuhiro KONDOU, Masahiro SATOU
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Publication number: 20110120822Abstract: An automobile hydraulic shock absorber includes a cylinder body, a piston, an upper support, a piston rod, a volume adjustment mechanism, first and second communicating passages, and a pressure-applying mechanism. The piston rod is attached to the upper support via a rubber cushion. The volume adjustment mechanism includes a free piston. The first and second communicating passages communicate the first oil chamber and second oil chamber with each other in the cylinder body via a diaphragm. The pressure-applying mechanism is disposed outside the cylinder body, movement thereof is restricted by the upper support, and the pressure-applying mechanism pushes the piston rod downward.Type: ApplicationFiled: November 18, 2010Publication date: May 26, 2011Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHAInventors: Katsuhiro KONDOU, Masashi MAEDA, Yutaka YAMAZAKI
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Patent number: 7845661Abstract: A reinforcement device for a vehicle is formed in a slender shape and comprises a medial region with a hydraulic damper. The damper generates a damping force against deformation in the longitudinal direction. The longitudinal direction is defined as a lateral direction of the associated vehicle body. The reinforcement device is removably mounted at both ends to a frame of the vehicle.Type: GrantFiled: December 14, 2005Date of Patent: December 7, 2010Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Katsuhiro Kondou, Masahiro Satou
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Patent number: 7735909Abstract: A body reinforcement device comprises a rigid reinforcement member that connects two vehicle body portions to be reinforced. The body reinforcement device also comprises a damping force member that spans the space between the two vehicle body portions. The rigid reinforcement member and the damping force member preferably extend generally parallel to each other.Type: GrantFiled: February 7, 2005Date of Patent: June 15, 2010Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Masahiro Satou, Katsuhiro Kondou
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Publication number: 20090283373Abstract: A damper includes a cylinder tube having a first end connected to one portion of a member of an object for damping, and a fixing rod guide arranged to close a second end of the cylinder tube; a movable rod guide fitted on the first end of the cylinder tube; a main piston rod extending from the piston side, the piston fitted in the cylinder tube and passing through the fixing rod guide; a sub-piston rod extending on the piston side and passing through the movable rod guide; and a spring normally biasing the movable rod guide toward the piston. A damping force generation oil passage is arranged to connect first and second oil chambers in a cylinder tube defined by the piston. The number of parts of a through-rod type damper is reduced to simplify a construction thereof and to make the damper compact.Type: ApplicationFiled: October 30, 2006Publication date: November 19, 2009Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHAInventors: Masahiro Satou, Seiji Sawai, Yutaka Yamazaki, Katsuhiro Kondou
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Patent number: 7604247Abstract: An extended section is provided on a head of a mounting bolt used to mount attached components, such as a front suspension member, a rear suspension member, and a rear stability brace, to a floor panel of a monocoque body. The extended section extends along the axis of the mounting bolt in a direction opposite to a threaded section. A male screw is formed on the extended section. Mount brackets of the vehicle body vibration damping apparatus can be mounted to the male screw.Type: GrantFiled: October 25, 2007Date of Patent: October 20, 2009Assignee: Yamaha Hatsudoki Kabushiki KaishaInventor: Katsuhiro Kondou
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Publication number: 20080100099Abstract: An extended section is provided on a head of a mounting bolt used to mount attached components, such as a front suspension member, a rear suspension member, and a rear stability brace, to a floor panel of a monocoque body. The extended section extends along the axis of the mounting bolt in a direction opposite to a threaded section. A male screw is formed on the extended section. Mount brackets of the vehicle body vibration damping apparatus can be mounted to the male screw.Type: ApplicationFiled: October 25, 2007Publication date: May 1, 2008Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHAInventor: Katsuhiro Kondou
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Publication number: 20070290525Abstract: A body reinforcement device comprises a rigid reinforcement member that connects two vehicle body portions to be reinforced. The body reinforcement device also comprises a damping force member that spans the space between the two vehicle body portions. The rigid reinforcement member and the damping force member preferably extend generally parallel to each other.Type: ApplicationFiled: February 7, 2005Publication date: December 20, 2007Inventors: Masahiro Satou, Katsuhiro Kondou
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Publication number: 20060125225Abstract: A reinforcement device for a vehicle is formed in a slender shape and comprises a medial region with a hydraulic damper. The damper generates a damping force against deformation in the longitudinal direction. The longitudinal direction is defined as a lateral direction of the associated vehicle body.Type: ApplicationFiled: December 14, 2005Publication date: June 15, 2006Inventors: Katsuhiro Kondou, Masahiro Satou
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Publication number: 20060006030Abstract: A shock absorber has a spring positioned within a chamber. The spring provides a spring force on a piston that offsets a hydraulic force such that the forces on the piston are generally balanced when a vehicle is at rest.Type: ApplicationFiled: July 14, 2005Publication date: January 12, 2006Inventors: Masahiro Satou, Katsuhiro Kondou, Seiji Sawai