Patents by Inventor Mark R. Ambridge

Mark R. Ambridge 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).

  • Towing vehicle
    Patent number: 4664585
    Abstract: A towing vehicle which has a lifting beam at its rear end for lifting a vehicle prior to being towed is provided with tracks which extend longitudinally of the vehicle and at least one mass which can be moved along the tracks to vary the front axle loading of the vehicle, thus enabling the steering ability of the vehicle to be maintained even when lift/towing a heavy load.
    Type: Grant
    Filed: April 15, 1985
    Date of Patent: May 12, 1987
    Inventors: Richard J. Ambridge, Mark R. Ambridge, Timothy L. Ambridge