Patents by Inventor Bernard R. Stivers

Bernard R. Stivers 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).

  • Fluid operated circuit for controlling a dual post hydraulic lift assembly
    Patent number: 4892028
    Abstract: A fluid operated circuit for controlling the movement of pistons contained in the drive and idler cylinders of a conventional dual post vehicle lift assembly of the type wherein the cylinders are hydraulically connected in tandem so that movement of the idler cylinder piston is dependent upon movement of the drive cylinder piston and wherein the pistons, while operative to lift and lower movable article supporting structures, are not fixedly connected thereto.
    Type: Grant
    Filed: September 10, 1984
    Date of Patent: January 9, 1990
    Assignee: VBM Corporation
    Inventor: Bernard R. Stivers