Patents by Inventor George Schaeffler

George Schaeffler 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).

  • Self-adjusting hydraulic valve tappet
    Patent number: 4867114
    Abstract: A self-adjusting hydraulic valve tappet disposed in a guide bore of a cylinder head of an internal combustion engine and comprising a cup-shaped housing comprised of a hollow cylindrical wall closed at one end by an end member against the outside of which a cam of a camshaft abuts whereby the actual hydraulic play compensating element is guided for longitudinal movement in a bore of a radial flange located at a distance from the end member, the bore being concentric with the hollow cylindrical wall and the radial flange as separate component consisting of a material having a higher coefficient of expansion than steel and being inserted and fixed in the bore of the hollow cylindrical wall with its external mantle surface in a liquid-proof manner, characterized in that between the end member on one side and the radial flange on the other side a hollow tubular element is disposed which under axial pre-tension bears with one of its axial ends against the end member and with its other axial end against the radial
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: September 19, 1989
    Assignee: INA Walzlager Schaeffler KG
    Inventor: George Schaeffler
  • Self-adjusting hydraulic valve tappet
    Patent number: 4709668
    Abstract: A self-adjusting hydraulic valve tappet arranged in a bore of a cylindrical guide bore of a cylinder head of an internal combustion engine and being contacted at one end face by a cam of a shaft and bearing with a second end face against a valve stem, the tappet comprising a cup shaped housing comprised of a hollow cylindrical wall (2) closed at one end by an end member (3) against the outside of which the cam abuts and a cylindrical guide sleeve (6,30,32) concentric with the cylindrical wall (2) and arranged in the center of an annular flange element (5) which at its outer circumference merges into the cylindrical wall (2) of the housing and defines an annular oil reservoir (14) between the cylindrical wall (2) and the cylindrical guide sleeve (6,30,32), the oil reservoir (14) being supplied with oil through a bore (15) leading to the outside of the housing, a self-adjusting hydraulic play compensation element (13) being guided for longitudinal movement in the guide sleeve (6,30,32) and bearing with an end f
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: December 1, 1987
    Assignee: INA Walzlager Schaeffler KG
    Inventors: Horst Klug, Wolfgang Mocker, George Schaeffler, Walter Speil