Patents by Inventor William Richard Mitchell

William Richard Mitchell 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).

  • Hydraulically actuated electronic fuel injection system
    Patent number: 6213093
    Abstract: A hydraulically actuated electronically controlled fuel injection system comprises a pressure intensifier (6, 7) associated with a hydraulically controlled differential valve (4) having a poppet valve (27) opening into a working chamber (10) of the pressure intensifier (6, 7). An external groove (8) is provided on the plunger (7) of the intensifier (6, 7) for connection of the plunger's compression chamber (12) with a nozzle's locking chamber (17) during an injection cut-off period.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: April 10, 2001
    Inventors: Sergi Yudanov, William Richard Mitchell
  • Hydraulically actuated electronic fuel injection system
    Patent number: 5785021
    Abstract: A hydraulically actuated electronically controlled unit injection system comprises a pressure intensifier associated with a hydraulically controlled differential valve (HDV) having a poppet valve opening into a working chamber of the pressure intensifier wherein there is a throttling slot between the poppet valve chamber and the working chamber with either at least a bypass channel between the poppet valve chamber and the working chamber or a bore connecting the working chamber to a control chamber of the HDV.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: July 28, 1998
    Assignee: Sergi Yudanov and Invent Engineering Pty Ltd
    Inventors: Sergi Yudanov, William Richard Mitchell
  • Hydraulically actuated electronic fuel injection system
    Patent number: RE39373
    Abstract: A hydraulically actuated electronically controlled unit injection system comprises a pressure intensifier associated with a hydraulically controlled differential valve (HDV) having a poppet valve opening into a working chamber of the pressure intensifier wherein there is a throttling slot between the poppet valve chamber and the working chamber with either at least a bypass channel between the poppet valve chamber and the working chamber or a bore connecting the working chamber to a control chamber of the HDV.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: November 7, 2006
    Assignee: Enviro Diesel Systems Pty Limited
    Inventors: Sergi Yudanov, Cherriden Clair Mitchell, William Richard Mitchell