Patents by Inventor Keizo Ishizu

Keizo Ishizu 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: 7321214
    Abstract: A controller is operable in one of a plurality of operational modes, which include an estimated temperature computation performing mode for performing computing of an estimated temperature of the motor and an estimated temperature computation non-performing mode for stopping the computing of the estimated temperature of the motor. An operational mode of the controller is changed from the estimated temperature computation performing mode to the estimated temperature computation non-performing mode according to a predetermined condition in a stopped state of the motor.
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: January 22, 2008
    Assignee: ASMO Co., Ltd.
    Inventors: Shigeru Kobayashi, Keizo Ishizu
  • Publication number: 20070103820
    Abstract: A controller is operable in one of a plurality of operational modes, which include an estimated temperature computation performing mode for performing computing of an estimated temperature of the motor and an estimated temperature computation non-performing mode for stopping the computing of the estimated temperature of the motor. An operational mode of the controller is changed from the estimated temperature computation performing mode to the estimated temperature computation non-performing mode according to a predetermined condition in a stopped state of the motor.
    Type: Application
    Filed: November 2, 2006
    Publication date: May 10, 2007
    Applicant: ASMO CO., LTD.
    Inventors: Shigeru Kobayashi, Keizo Ishizu
  • Patent number: 5875588
    Abstract: A position detecting device of a moving body can detect the position of a window glass of a power window device with high precision, and can set an initial position of the window glass without making any complicated adjustment. Further, this device can be realized with a simple structure and at low cost. Furthermore, the position detecting device and the vehicle door can reliably maintain an original assembly function in a normal assembly state into the moving body. The position detecting device 30 has a pushing button 202. Rotation of a ring gear 46 can be compulsorily prevented by pushing the pushing button 202 even in an operating state of a motor. Thus, if the motor is driven by pushing the pushing button 202, the position detecting device can be reliably assembled into a vehicle body in the normal assembly state irrespective of a rotating position of a motor rotating shaft (e.g.
    Type: Grant
    Filed: February 26, 1997
    Date of Patent: March 2, 1999
    Assignees: Asmo Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Katsuhiko Torii, Keizo Ishizu, Masaki Fukuzawa