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).

  • Patent number: 8556047
    Abstract: 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: Grant
    Filed: November 18, 2010
    Date of Patent: October 15, 2013
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Katsuhiro Kondou, Masashi Maeda, Yutaka Yamazaki
  • Patent number: 8196722
    Abstract: 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: Grant
    Filed: October 30, 2006
    Date of Patent: June 12, 2012
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Masahiro Satou, Seiji Sawai, Yutaka Yamazaki, Katsuhiro Kondou
  • Patent number: 8162334
    Abstract: 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: Grant
    Filed: December 7, 2010
    Date of Patent: April 24, 2012
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Katsuhiro Kondou, Masahiro Satou
  • Patent number: 8037982
    Abstract: 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: Grant
    Filed: July 14, 2005
    Date of Patent: October 18, 2011
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Masahiro Satou, Katsuhiro Kondou, Seiji Sawai
  • Publication number: 20110133520
    Abstract: 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: Application
    Filed: December 7, 2010
    Publication date: June 9, 2011
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Katsuhiro KONDOU, Masahiro SATOU
  • Publication number: 20110120822
    Abstract: 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: Application
    Filed: November 18, 2010
    Publication date: May 26, 2011
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Katsuhiro KONDOU, Masashi MAEDA, Yutaka YAMAZAKI
  • Patent number: 7845661
    Abstract: 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: Grant
    Filed: December 14, 2005
    Date of Patent: December 7, 2010
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Katsuhiro Kondou, Masahiro Satou
  • Patent number: 7735909
    Abstract: 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: Grant
    Filed: February 7, 2005
    Date of Patent: June 15, 2010
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Masahiro Satou, Katsuhiro Kondou
  • Publication number: 20090283373
    Abstract: 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: Application
    Filed: October 30, 2006
    Publication date: November 19, 2009
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Masahiro Satou, Seiji Sawai, Yutaka Yamazaki, Katsuhiro Kondou
  • Patent number: 7604247
    Abstract: 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: Grant
    Filed: October 25, 2007
    Date of Patent: October 20, 2009
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Katsuhiro Kondou
  • Publication number: 20080100099
    Abstract: 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: Application
    Filed: October 25, 2007
    Publication date: May 1, 2008
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Katsuhiro Kondou
  • Publication number: 20070290525
    Abstract: 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: Application
    Filed: February 7, 2005
    Publication date: December 20, 2007
    Inventors: Masahiro Satou, Katsuhiro Kondou
  • Publication number: 20060125225
    Abstract: 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: Application
    Filed: December 14, 2005
    Publication date: June 15, 2006
    Inventors: Katsuhiro Kondou, Masahiro Satou
  • Publication number: 20060006030
    Abstract: 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: Application
    Filed: July 14, 2005
    Publication date: January 12, 2006
    Inventors: Masahiro Satou, Katsuhiro Kondou, Seiji Sawai