Patents by Inventor Shinji Michimoto

Shinji Michimoto 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).

  • Controller for an automatic door system
    Patent number: 5831403
    Abstract: An automatic door system includes a motor which drives a door to open and close. A CPU operating in accordance with a signal from an encoder operatively coupled to the motor detects the position of the door and prepares and applies a control signal based on the detected door position to a motor drive unit. The motor drive unit alternately drives and brakes the motor. The CPU calculates the speed of the door at a particular door position on the basis of the signal from the encoder and operates to make the door speed equal to the aimed speed for the current door position.
    Type: Grant
    Filed: February 27, 1997
    Date of Patent: November 3, 1998
    Assignee: Nabco Limited
    Inventors: Hisayuki Kanki, Naoki Taguchi, Shinji Michimoto, Kazuhiro Oba