Patents by Inventor Richard L. M. Sears

Richard L. M. Sears 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 hydrostatic bearing between barrel and head of axial piston units
    Patent number: 3980003
    Abstract: A hydraulic fluid pressure energy translating machine is provided with hydrostatic pressure-balancing means which communicate with the primary port to balance hydrostatic forces acting on the barrel during operation of the machine to maintain an optimum bearing clearance between the head and barrel, thereby controlling fluid leakage and maintaining adequate lubrication and support at this interface.
    Type: Grant
    Filed: February 7, 1975
    Date of Patent: September 14, 1976
    Assignee: Caterpillar Tractor Co.
    Inventors: Robert J. Huebner, Carman P. Lynnes, Ralph A. Matzelle, Richard L. M. Sears