Patents by Inventor Scott P. Shafer

Scott P. Shafer 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).

  • Bi-directional low maintenance vane pump
    Patent number: 6503064
    Abstract: A long-life, low maintenance, bi-directional vane-type water pump has a high degree of symmetry and operates with equal efficiency in either direction. The axial position of the drive shaft is controlled to permit improved lubrication by the pumping fluid of component parts on which the drive shaft is journaled.
    Type: Grant
    Filed: July 15, 1999
    Date of Patent: January 7, 2003
    Assignee: Lucas Aerospace Power Transmission
    Inventors: Steven B. Croke, Scott P. Shafer