Patents by Inventor Yousuke Hasumi

Yousuke Hasumi 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: 7425009
    Abstract: In a front fork apparatus of a two-wheeled vehicle or the like in which left and right front fork constituted by vehicle body side tubes and tire wheel side tubes which are slidably fitted to each other, are provided in both left and right sides of a front wheel, and a brake apparatus is attached only to the front fork in one side of the left and right sides, a thickness of the tire wheel side tube of the front fork in the one side to which the brake apparatus is attached, is made larger than a thickness of the tire wheel side tube of the front fork in the other side.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: September 16, 2008
    Assignee: Showa Corporation
    Inventors: Eitaro Namazue, Yousuke Hasumi
  • Patent number: 7201391
    Abstract: A front fork of a two-wheeled vehicle or the like is disclosed in which an annular free valve is provided between a taper-like valve seat surface formed in an upper surface of a valve seat member fixed to an inner periphery of a lower end portion of an inner tube and a valve stopper so as to be movable upward and downward such that an annular gap is formed with respect to an outer periphery of a hollow pipe. A leaf spring energizing the free valve to the taper-like valve seat surface is provided in an upper side of the free valve, the leaf spring having an annular portion and a plurality of hook portions extending in a radial direction to an inner periphery of the annular portion, and being formed in a flat shape in a free state.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: April 10, 2007
    Assignee: Showa Corporation
    Inventors: Hideaki Takahashi, Toshihide Tachibana, Yousuke Hasumi
  • Publication number: 20060170185
    Abstract: A front fork of a two-wheeled vehicle or the like is disclosed in which an annular free valve is provided between a taper-like valve seat surface formed in an upper surface of a valve seat member fixed to an inner periphery of a lower end portion of an inner tube and a valve stopper so as to be movable upward and downward such that an annular gap is formed with respect to an outer periphery of a hollow pipe. A leaf spring energizing the free valve to the taper-like valve seat surface is provided in an upper side of the free valve, the leaf spring having an annular portion and a plurality of hook portions extending in a radial direction to an inner periphery of the annular portion, and being formed in a flat shape in a free state.
    Type: Application
    Filed: June 20, 2005
    Publication date: August 3, 2006
    Inventors: Hideaki Takahashi, Toshihide Tachibana, Yousuke Hasumi
  • Publication number: 20060138744
    Abstract: In a front fork apparatus of a two-wheeled vehicle or the like in which left and right front fork constituted by vehicle body side tubes and tire wheel side tubes which are slidably fitted to each other, are provided in both left and right sides of a front wheel, and a brake apparatus is attached only to the front fork in one side of the left and right sides, a thickness of the tire wheel side tube of the front fork in the one side to which the brake apparatus is attached, is made larger than a thickness of the tire wheel side tube of the front fork in the other side.
    Type: Application
    Filed: June 20, 2005
    Publication date: June 29, 2006
    Inventors: Eitaro Namazue, Yousuke Hasumi