Patents by Inventor Hisao Suyama

Hisao Suyama 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).

  • Radio-controlled vehicle with RF noise elimination feature and with ultrasonic anti-collision means insensitive to mechanical shocks
    Patent number: 4023178
    Abstract: A radio-controlled vehicle having a steering motor, a drive motor, a drive mechanism, and a direction sensor for receiving an RF signal from a remote station to actuate the drive motor and to control the steering motor to direct the vehicle to the station. Also, an ultra-sonic anti-collision circuit for preventing the vehicle from colliding with any obstacle lying in the way of its travel. The direction sensor includes an integrating circuit to remove noise components from the direction control signal to thereby provide precise control to the drive mechanism. The ultra-sonic anti-collision circuit includes circuits for preventing malfunction of the anti-collision circuit due to mechanical shocks and/or vibrations of the vehicle.
    Type: Grant
    Filed: July 23, 1975
    Date of Patent: May 10, 1977
    Assignees: Sanyo Electric Co., Ltd., Tokyo Sanyo Electric Co., Ltd.
    Inventor: Hisao Suyama