Patents by Inventor Kouzi Nagai

Kouzi Nagai 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: 5004406
    Abstract: A radial piston pump has a rotor provided within a cylinder chamber in such a manner that a center axis of the rotor is offset from a center axis of the cylinder chamber. The rotor has three working chambers a piston is slidably provided each of which. Each working chamber may connect with a suction groove or a discharge groove so that there exists a couple of situations, one of which is that two working chambers connect with the discharge chamber simultaneously and another one of which is that single working chamber connects with the discharge chamber. In order to make the forcing point at which total biassing force of the piston is focussed move gradually, the radial piston pump has a delay angle at a front side of the suction chamber. Namely a pressure within the working chamber is preliminary reduced before the working chamber connects to the suction groove so that the forcing point should shift gradually.
    Type: Grant
    Filed: March 22, 1989
    Date of Patent: April 2, 1991
    Assignee: Nippondenso Co., Ltd.
    Inventors: Masatoshi Kuroyanagi, Masahiko Suzuki, Kazuma Matsui, Makoto Imaeda, Kouzi Nagai, Yoshiaki Ito
  • Patent number: D501863
    Type: Grant
    Filed: November 19, 2003
    Date of Patent: February 15, 2005
    Assignee: Ikegami Tsushinki Co., Ltd.
    Inventor: Kouzi Nagai
  • Patent number: D504904
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: May 10, 2005
    Assignee: Ikegami Tsushinki Co., Ltd.
    Inventors: Kouzi Nagai, Hiroshi Shimada
  • Patent number: D507804
    Type: Grant
    Filed: November 29, 2004
    Date of Patent: July 26, 2005
    Assignee: Ikegami Tsushinki Co., Ltd.
    Inventor: Kouzi Nagai
  • Patent number: D508710
    Type: Grant
    Filed: November 29, 2004
    Date of Patent: August 23, 2005
    Assignee: Ikegami Tsushinki Co., Ltd.
    Inventor: Kouzi Nagai
  • Patent number: D508934
    Type: Grant
    Filed: November 29, 2004
    Date of Patent: August 30, 2005
    Assignee: Ikegami Tsushinki Co., Ltd.
    Inventor: Kouzi Nagai
  • Patent number: D489742
    Type: Grant
    Filed: May 3, 2003
    Date of Patent: May 11, 2004
    Assignee: Ikegami Tsushiniki Co., Ltd.
    Inventor: Kouzi Nagai