Patents by Inventor Wayne C. Penfold

Wayne C. Penfold 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).

  • Brush holder for producing a constant brush pressure
    Patent number: 5808393
    Abstract: A brush holder assembly comprises a non-conductive brush holder body covered by a printed wiring board cover. The brush holder body includes a brush cavity for holding a brush, a spring cavity for holding a spring and a shunt wire cavity for holding a shunt wire. The spring is configured to hold the brush in contact with a commutator at a constant brush pressure throughout the entire length of brush travel. The brush holder body and printed wiring board cover are configured to enclose the brush, spring and shunt wire thus protecting the brush, spring and shunt wire.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: September 15, 1998
    Assignee: MPC Products Corporation
    Inventors: Wayne C. Penfold, Craig H. Scott, David J. Stapleton