Patents by Inventor Satohiko Tanaka

Satohiko Tanaka 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).

  • Access alarming method and apparatus for working vehicle
    Patent number: 4937795
    Abstract: An access alarming method and apparatus for activating an alarm in the event of the access of a working vehicle, such as a road roller, to an object, such as a worker, in the same working area as the vehicle. An ultrasonic wave transmitted by a transmitter on the object is received by a receiver on the vehicle. The received signal is processed and used to determine the relative position of the vehicle with respect to the object. An alarm is activated, and/or the vehicle is braked when it is judged that the object is within a hazard area determined in relation to the position and course of the vehicle.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: June 26, 1990
    Assignee: Tokyo Keiki Co., Ltd.
    Inventors: Ryohei Motegi, Yoichi Hirokawa, Yukio Yoshida, Junichi Furuki, Tetsuya Ishii, Isao Takiguchi, Hiroshi Kono, Takehiko Suyama, Tomohiro Gocho, Satohiko Tanaka, Narimasa Yamabe, Yoshimitsu Hashimoto