Patents by Inventor Manfred Pfiz

Manfred Pfiz 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).

  • Piston-pin for liquid cooled pistons
    Patent number: 4005686
    Abstract: Piston-pin for liquid cooled pistons containing a longitudinal bore and end sealing elements closing said bore, said sealing elements being impressed or shrunk into position. More specifically, the sealing elements are cup shaped, having a rim and a base, the wall-thickness relationship between such rim and base being 1 to 0.6, and the rim wall thickness being substantially less than the wall thickness of the piston pin surrounding the longitudinal bore.
    Type: Grant
    Filed: June 26, 1975
    Date of Patent: February 1, 1977
    Assignee: J. Wizemann & Co.
    Inventors: Kurt Wizemann, Manfred Pfiz