Patents by Inventor Kenneth C. Grainger

Kenneth C. Grainger 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).

  • Shutter valve for a marine engine
    Patent number: 5791953
    Abstract: A shutter valve construction for the exhaust system of a marine engine that discharges exhaust underwater. The valve construction includes an adaptor having an annular body that is adapted to be engaged in the end of an exhaust pipe. Opposite sides of the body are provided with outwardly projecting bosses which are received within holes in the exhaust pipe to position the adaptor relative to the pipe. The valve construction also includes a butterfly-type shutter valve that consists of a pair of valve members which are hinged to a hinge pin that is removably connected to the adaptor. To connect the valve to the adaptor, the ends of the hinge pin extend into opposed openings in the body of the adaptor and receive resilient grommets.
    Type: Grant
    Filed: January 23, 1997
    Date of Patent: August 11, 1998
    Assignee: Brunswick Corporation
    Inventors: Dennis R. Gunderson, Matthew W. Jaeger, Arthur L. Barker, Charles E. Wright, Darrin L. Doty, Kenneth C. Grainger