Patents Represented by Attorney Lawence J. Shurupoff

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  • Two piece hydraulic piston assembly with swaged piston-sleeve joint
    Patent number: 5014599
    Abstract: A piston and piston support rod assembly in which the piston is formed as a sheet metal stamping. A central sleeve is attached to the end wall of the stamped piston by a swaging operation performed on an annular section of the end wall. An undercut area of the sleeve defines a mandrel surface that effectively grips the end wall material deformed by the coining operation. A principal advantage of the new structure is a relatively low manufacturing cost.
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: May 14, 1991
    Assignee: Federal-Mogul Corporation
    Inventors: Judith Kocsis, Joseph A. Stojkov, Michael E. Towler