Patents by Inventor Eric D Bretey

Eric D Bretey 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).

  • Low input torque rotor for vane pump
    Patent number: 7467935
    Abstract: A vane-type fluid displacement unit having a housing, a drive shaft extending through the housing, a rotor secured to the drive shaft and disposed within the housing, the rotor having at least one non-smooth top or bottom surface, and at least one vane secured to the rotor.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: December 23, 2008
    Assignee: Sauer-Danfoss, Inc.
    Inventors: Michael A Betz, Eric D Bretey, Robert J Klinkel, Kevin J Landhuis