Patents by Inventor James A. Memmer

James A. Memmer 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).

  • Engine overspeed control of retarder
    Patent number: 3931870
    Abstract: A power train having an engine, a retarder and a transmission and controls to manually control the retarder and an engine overspeed responsive control operative to shorten a link in the manual control to move the retarder control valve to automatically apply the retarder in response to engine overspeed. An air cylinder in a link of the retarder apply linkage is actuated by vehicle air brake pressure controlled by a transmission input or engine speed governor to apply the retarder and prevent engine speed above a predetermined value and thus limit vehicle speed. When the retarder apply air cylinder shortens the link, the retarder apply pedal engages the brake off stop to provide the reaction to move the retarder valve.
    Type: Grant
    Filed: June 12, 1974
    Date of Patent: January 13, 1976
    Assignee: General Motors Corporation
    Inventor: James A. Memmer