Patents by Inventor David A. Craze

David A. Craze 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: 4564207
    Abstract: A hydraulic wheel lift device is adapted to be used with tow vehicles. The device is attached to a tow truck by means of a main boom pivotally secured to a wheel boom, which abuts against the tread portions of tires that the device will lift. A pair of L-shaped arms pivotally secured to the wheel boom are actuated to swing so that they frame the underside of the tires. As a result, each tire is framed by a U-shaped bracket consisting of the wheel boom and the L-shaped arms. The main boom is lifted and in turn lifts the tires and the vehicle being towed.
    Type: Grant
    Filed: October 17, 1983
    Date of Patent: January 14, 1986
    Inventors: Calvin W. Russ, David A. Craze