Patents by Inventor Youzo Yamaguchi

Youzo Yamaguchi 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).

  • Rotary shock absorber having vanes with radial flow clearance
    Patent number: 5305858
    Abstract: A rotary shock absorber suitable for use in a suspension system of a vehicle. The shock absorber is provided with a housing and a rotary shaft supported by the housing for relative rotation thereto. A pressure chamber is formed in the housing and a rotor having a pair of blades is received within the pressure chamber. Further, a pair of partition walls are formed within the pressure chamber to define first and second chambers at both sides of each blade, and the first and second chambers are communicated with each other through throttles. When the rotary shaft is rotated, a high viscous fluid filled within the first and second chambers flows therebetween through the throttles. Due to the flow resistances of the throttles, pressures are generated in the first or second chambers. This pressure generation is used to generate a damping force.
    Type: Grant
    Filed: July 21, 1992
    Date of Patent: April 26, 1994
    Assignee: Toyoda Koki Kabushiki Kaisha
    Inventors: Kyosuke Haga, Toshifumi Sakai, Naoyuki Kokubo, Masaharu Ooba, Youzo Yamaguchi, Sadamu Tuge