Patents by Inventor Kamishima Hirofumi

Kamishima Hirofumi 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).

  • Oil pump and automatic transmission including the same
    Patent number: 7699590
    Abstract: An oil pump includes a pump cover covering a recess in a side face of a pump body to form a gear compartment therebetween. A drive gear and a rotatably driven gear are meshed and mounted in the gear compartment. Working spaces R are formed by the engagement of the meshed gear teeth. Discharge ports are formed in both the pump body and the pump cover in communication with the gear compartment. A notch is formed in the pump body at the bottom of the gear compartment and extends from the front end of the discharge port in the pump body to the rear end of a discharge area for the working spaces. Another notch is formed in the inner side face of the pump cover, and extends from the front end of the discharge port in the cover to the rear end of the discharge area.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: April 20, 2010
    Assignees: Aisin AW Co., Ltd., Aisin Takaoka Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Akira Matsuo, Akihito Hongoya, Mikio Iwase, Yoshinori Shibayama, Makoto Kaneso, Kamishima Hirofumi, Atsushi Hanawa, Koichi Miyamoto, Haruhisa Suzuki
  • Oil pump and automatic transmission including the same
    Publication number: 20090180908
    Abstract: An oil pump includes a pump cover covering a recess in a side face of a pump body to form a gear compartment therebetween. A drive gear and a rotatably driven gear are meshed and mounted in the gear compartment. Working spaces R are formed by the engagement of the meshed gear teeth. Discharge ports are formed in both the pump body and the pump cover in communication with the gear compartment. A notch is formed in the pump body at the bottom of the gear compartment and extends from the front end of the discharge port in the pump body to the rear end of a discharge area for the working spaces. Another notch is formed in the inner side face of the pump cover, and extends from the front end of the discharge port in the cover to the rear end of the discharge area.
    Type: Application
    Filed: February 18, 2005
    Publication date: July 16, 2009
    Applicants: AISIN AW CO., LTD., AISIN TAKAOKA CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akira Matsuo, Akihito Hongoya, Mikio Iwase, Yoshinori Shibayama, Makoto Kaneso, Kamishima Hirofumi, Atsushi Hanawa, Koichi Miyamoto, Haruhisa Suzuki