Patents by Inventor Steven P. Hefner

Steven P. Hefner 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).

  • DC motor magnetic circuit configuration with high flux density
    Patent number: 5742110
    Abstract: A DC motor magnetic circuit configuration having reduced flux leakage and improved flux density that leads to greater motor efficiency and a higher motor constant. In one embodiment of the invention, and improved permanent magnet DC motor is provided that has a stator frame supporting a plurality of pole pieces in proximity to a rotor rotatably accommodated therein. The improvement comprises at least one of the pole pieces having a pole face lying in a plane that intersects both isotropic and anisotropic planes of the pole piece.
    Type: Grant
    Filed: August 25, 1995
    Date of Patent: April 21, 1998
    Assignee: MPC Products Corporation
    Inventor: Steven P. Hefner