Patents by Inventor David M. Bethell

David M. Bethell 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).

  • Vehicle engine suspension systems
    Patent number: 4869474
    Abstract: A vehicle engine suspension system in which, in order to reduce `shake` electrically actuated engine mounts are provided, power being supplied to the engine mounts by a control system responsive to vehicle body accelerations (e.g. in the vertical direction). The arrangement is such that when a tendency of the body to move is detected, e.g. by an accelerometer mounted on the body, the engine mounts are actuated so as to generate, between the engine and the body, forces which are of such amplitude and phase as to reduce the shake of the body.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: September 26, 1989
    Assignee: BTR plc
    Inventors: Anthony Best, David M. Bethell, Raymond Hoole