Patents by Inventor Peter L. Main

Peter L. Main 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).

  • Viscous shear fluid couplings
    Patent number: 4128153
    Abstract: The disclosure illustrates a viscous shear fluid fan drive comprising a driving disc received within an annular chamber of an output member. The disc and the chamber include closely spaced radially extending surfaces which transmit torque through a viscous fluid maintained between them. Pumping grooves are provided in the disc to insure rapid build up of hydrodynamic lubrication upon startup of the coupling. Cavities may be provided in the walls of the chamber to receive additional viscous fluid and extend service life of the coupling.
    Type: Grant
    Filed: May 6, 1977
    Date of Patent: December 5, 1978
    Assignee: Holset Engineering Company Limited
    Inventor: Peter L. Main