Patents by Inventor Dennis M. Frink

Dennis M. Frink 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).

  • Patent number: 4903974
    Abstract: A vehicle suitable for various uses in rough terrain. The vehicle has a platform or chassis (11) suspended within a flexible frame (14). The wheels (17, 18) are mounted at opposite ends of side members (23, 24) of the flexible frame (14). The platform connects to the neutral midpoints of the frame rails so as to minimize the movement of the platform or chassis out of the horizontal plane. Rotating drive shafts may enter or pass through hollow pivot pins at the midpoints of the members of the frame (14) thereby remaining on the same plane with one another and isolated from flexing from the frame. The platform may serve as a mounting for a seat (16) of the vehicle. It may also be utilized as a support for the engine (15) of the vehicle.
    Type: Grant
    Filed: October 26, 1987
    Date of Patent: February 27, 1990
    Assignee: JAC Tractor Limited
    Inventor: Dennis M. Frink