Patents by Inventor Charles H. Schlecht

Charles H. Schlecht 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).

  • Method for forming a track link bushing having a contoured opening
    Patent number: 4084423
    Abstract: A method for extruding a track link bushing having a contoured opening and a generally cylindrical outer surface.
    Type: Grant
    Filed: May 3, 1976
    Date of Patent: April 18, 1978
    Assignee: Caterpillar Tractor Co.
    Inventor: Charles H. Schlecht
  • Internal retaining tabs for a filled piston
    Patent number: 3984904
    Abstract: The invention provides a hollow core filled piston including core retaining means for mechanically interlocking and retaining a core of filler material within the piston against angular and axial displacement. The piston includes a hollow skirt portion defining a stepped-bore cavity, and retaining means for retaining a core of filler material within the cavity comprising a plurality of annular projections formed from the shoulder between the stepped bores. The invention further provides a tool for cutting and displacing segments of the shoulder to form the annular projections.
    Type: Grant
    Filed: November 27, 1974
    Date of Patent: October 12, 1976
    Assignee: Caterpillar Tractor Co.
    Inventor: Charles H. Schlecht