Patents by Inventor Kutsuhisa Ishii

Kutsuhisa Ishii 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 pressure supply in an automatic transmission
    Patent number: 7648013
    Abstract: An automatic transmission supplies oil pressure to a hydraulic servo of a second clutch through an oil pressure supply passage extending through a first drum and a second drum, the oil pressure supply passage including a plurality of first oil holes formed in the first drum at equal, circumferential intervals, a plurality of second oil holes formed in the second drum at equal, circumferential intervals, and an annular oil passage formed between the first and second drums and connecting the first oil holes and the second oil holes. The number of first oil holes is different from the number of second oil holes.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: January 19, 2010
    Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Naoya Okada, Kutsuhisa Ishii, Mikio Iwase, Hirofumi Ota, Kazutoshi Nozaki, Atsushi Honda
  • Oil pressure supply in an automatic transmission
    Publication number: 20070125615
    Abstract: An automatic transmission supplies oil pressure to a hydraulic servo of a second clutch through an oil pressure supply passage extending through a first drum and a second drum, the oil pressure supply passage including a plurality of first oil holes formed in the first drum at equal, circumferential intervals, a plurality of second oil holes formed in the second drum at equal, circumferential intervals, and an annular oil passage formed between the first and second drums and connecting the first oil holes and the second oil holes. The number of first oil holes is different from the number of second oil holes.
    Type: Application
    Filed: November 16, 2006
    Publication date: June 7, 2007
    Applicants: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoya Okada, Kutsuhisa Ishii, Mikio Iwase, Hirofumi Ota, Kazutoshi Nozaki, Atsushi Honda