Patents by Inventor Stephen Mark Hodge

Stephen Mark Hodge 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).

  • Drive systems
    Patent number: 5782083
    Abstract: A hydrostatic drive comprises a motor and a gerotor pump having its annulus or its rotor axially split into two parts of unequal length, one of the two parts being angularly shiftable relative to the other to enable the drive to be shifted between forward, reverse, and neutral conditions.
    Type: Grant
    Filed: June 21, 1996
    Date of Patent: July 21, 1998
    Assignee: Concentric Pumps Limited
    Inventor: Stephen Mark Hodge
  • Ladder frame oil pump
    Patent number: D604747
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: November 24, 2009
    Assignee: Concentric PLC
    Inventor: Stephen Mark Hodge