Patents by Inventor Douglas E. Dawes

Douglas E. Dawes 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).

  • Patent number: 5067464
    Abstract: A mechanically pressurized electronic fuel injector for use in internal combustion engines is actuated by the engine valve train during the injection stroke. A control solenoid is mounted to the injector and has its axis inclined with respect to the axis of the injector. A control valve passage has its axis generally coaxial with the central axis of the control solenoid. Machining of the control valve passage is accomplished through the receiving boss for the control solenoid. High pressure sealing plugs, previously required to seal orifices in the exterior surface of the injector body which were needed to provide access to drill or machine the control valve passage, are completely eliminated. The drilling and machining of the control valve passage is accomplished without drilling through the exterior surface of the injector body.
    Type: Grant
    Filed: March 29, 1990
    Date of Patent: November 26, 1991
    Assignee: Cummins Engine Company, Inc.
    Inventors: David M. Rix, Martin W. Long, Thomas R. Lee, Douglas E. Dawes