Patents by Inventor Keishi Ohyama

Keishi Ohyama 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).

  • Robot arm device capable of conveying an article in circumferential and radial directions
    Patent number: 5587637
    Abstract: A robot arm device includes an expandable arm portion including an arm member, a forearm arm member, and a hand member. The arm member is fixedly attached with an arm drive wheel which is driven by a first drive motor. The arm member carries a transmission wheel disposed coaxially with the arm drive wheel and rotatable independently from the arm drive wheel and a forearm drive wheel disposed at a leading end of the arm member and rotatable independently from the arm member and fixedly connected at a base end of the forearm member. The forearm member carries a stationary wheel disposed coaxially with the forearm drive wheel and fixedly connected with the arm member and a hand drive wheel disposed at a leading end of the forearm member. The forearm drive wheel is drivingly rotated by a second drive motor in addition to a relative rotation due to a rotation of the arm member.
    Type: Grant
    Filed: December 29, 1994
    Date of Patent: December 24, 1996
    Assignee: Tatsumo Kabushiki Kaisha
    Inventor: Keishi Ohyama