Patents by Inventor Keigo Shirahuji

Keigo Shirahuji 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).

  • Capacity control valve
    Patent number: 6772990
    Abstract: A capacity control valve that implements an accurate pressure control of a valve body by preventing unwanted pressures from influencing on the valve body and that alters the function of a control chamber such that the pressure within the control chamber to which a control pressure is supplied can quickly be modulated. In the capacity control valve, a valve opening joint portion which is integral with a valve body can rapidly be disengaged from an engagement portion which is integral with a pressure sensing device, hence a quick lifting of the valve body so as to modulate the capacity or pressure in the control chamber.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: August 10, 2004
    Assignee: Eagle Industry Co., Ltd.
    Inventors: Sinji Sasaki, Keigo Shirahuji, Toshiaki Iwa, Ryousuke Cho, Yoshihiro Ogawa, Katsuya Shirai, Takahiro Maeda, Norio Uemura
  • Capacity control valve
    Publication number: 20030145615
    Abstract: A capacity control valve that implements an accurate pressure control of a valve body by preventing unwanted pressures from influencing on the valve body and that alters the function of a control chamber such that the pressure within the control chamber to which a control pressure is supplied can quickly be modulated. In the capacity control valve, a valve opening joint portion which is integral with a valve body can rapidly be disengaged from an engagement portion which is integral with a pressure sensing device, hence a quick lifting of the valve body so as to modulate the capacity or pressure in the control chamber.
    Type: Application
    Filed: January 31, 2003
    Publication date: August 7, 2003
    Applicant: Eagle Industry co. Ltd.
    Inventors: Sinji Sasaki, Keigo Shirahuji, Toshiaki Iwa, Ryousuke Cho, Yoshihiro Ogawa, Katsuya Shirai, Takahiro Maeda, Norio Uemura