Patents by Inventor Clive Dawson

Clive Dawson 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).

  • Hydraulic control means
    Patent number: 6192936
    Abstract: A hydraulic remote control (HRC) valve including a main spool valve and a pilot pressure control valve. A lever is operatively connected to the pilot valve whereby to provide “finger tip” control of the main spool valve. The HRC has an inverting output, whereby movement of the lever away from a neutral position causes a decrease in hydraulic pressure supplied to a hydraulic clutch. In practice, two HRC's according to the invention are embodied in a single housing. The HRC of the invention is of use in controlling the hydraulic steering clutches of tracked vehicles.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: February 27, 2001
    Assignee: Aeroquip-Vickers Limited
    Inventor: Clive Dawson