Patents by Inventor Arthur C. Kirkland

Arthur C. Kirkland 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).

  • Variable rate vehicle suspension
    Patent number: 4010941
    Abstract: A variable rate vehicle suspension comprising a torsion bar having one end anchored to a road arm and the other end anchored to the vehicle sprung mass. Additional anchorage elements are located at spaced points along the torsion bar length. Power actuators selectively move the additional anchorage elements into operative connections with the torsion bar in accordance with the expected load to be carried by the vehicle.
    Type: Grant
    Filed: October 30, 1975
    Date of Patent: March 8, 1977
    Inventor: Arthur C. Kirkland