Patents by Inventor Toshimichi Saito

Toshimichi Saito 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).

  • Vehicle-mounted motor drive apparatus
    Patent number: 5596253
    Abstract: A vehicle-mounted motor drive apparatus which stops the rotation of a motor immediately after an object obstructs a movable part driven by the motor. The drive apparatus includes a motor drive device for selectively driving and stopping a motor, an electric current measuring device for measuring a value of electric current flowing through the motor, a change-in-current-value detecting device for detecting an incremental change in the motor current, and a motor control device for supplying a first control signal or a second control signal to the motor drive device. The motor drive device continuously drives the motor according to the polarity of the detected increment of the current value in response to the first control signal, and immediately stops driving the motor in response to the second control signal.
    Type: Grant
    Filed: May 16, 1995
    Date of Patent: January 21, 1997
    Assignee: Alps Electric Co., Ltd.
    Inventors: Ken Mizuta, Ken Shibazaki, Yukio Miura, Kazunori Fujioka, Toshimichi Saito, Isao Takagi