Patents by Inventor David C. Ingham

David C. Ingham 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 steering control
    Patent number: 4920820
    Abstract: The hand grip of a vehicle steering control rotates about an axis passing through the center of the wrist. Control input is by rotation of the forearm while forces exerted by the operator radially from or parallel to the axis of rotation do not cause control input. A transducer, sensing hand grip position, is restrained only in rotation and isolated from forces acting on the hand grip.
    Type: Grant
    Filed: October 15, 1985
    Date of Patent: May 1, 1990
    Assignee: Hyster Company
    Inventors: David C. Ingham, Delmar G. Schwab