Patents by Inventor Charles E. Butz

Charles E. Butz 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).

  • Punch holder with stripper arrangement
    Patent number: 5176057
    Abstract: A punch holder is described having a stripper arrangement composed of an annular array of nested coil springs housed within a series of aligned facing bores in a punch holder tang and punch holder body to generate a high stripping force in a compact space. A threaded removal ring is employed to force a press fitted stripper cap off the end of the punch holder body. A support ring can be employed to support the stripping cap for small sized punches, or a metal reinforcement molded into the stripper cap.
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: January 5, 1993
    Assignee: Murata Machinery Limited
    Inventors: Victor L. Chun, Charles E. Butz