Patents by Inventor Keisuke Umenaka

Keisuke Umenaka 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).

  • Control system for automatic transmission
    Patent number: 8290671
    Abstract: A control system for an automatic transmission that does not require a cut-off valve, and that can inhibit a reverse control even if a detection unit for detecting a shift range fails. The control system includes a first friction engagement element, which is engaged in predetermined forward and reverse shift speeds, a detection unit that detects a shift range from shift ranges that include a forward range and a reverse range; a failure judgment unit for judging failure of the detection unit, and an avoidance unit for shifting to a forward shift speed that does not engage the first friction engagement element if the failure judgment unit determines that the detection unit has failed.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: October 16, 2012
    Assignee: Aisin Aw Co., Ltd.
    Inventors: Masaki Nishide, Shinichiro Murakami, Keisuke Umenaka
  • CONTROL SYSTEM FOR AUTOMATIC TRANSMISSION
    Publication number: 20100318271
    Abstract: A control system for an automatic transmission that does not require a cut-off valve, and that can inhibit a reverse control even if a detection unit for detecting a shift range fails. The control system includes a first friction engagement element, which is engaged in predetermined forward and reverse shift speeds, a detection unit that detects a shift range from shift ranges that include a forward range and a reverse range; a failure judgment unit for judging failure of the detection unit, and an avoidance unit for shifting to a forward shift speed that does not engage the first friction engagement element if the failure judgment unit determines that the detection unit has failed.
    Type: Application
    Filed: May 10, 2010
    Publication date: December 16, 2010
    Applicant: AISIN AW CO., LTD.
    Inventors: Masaki NISHIDE, Shinichiro Murakami, Keisuke Umenaka