Patents by Inventor Raymond M. Grimes

Raymond M. Grimes 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).

  • Method of, and apparatus for, retarding the motion of a power driven vehicle
    Patent number: 4276972
    Abstract: A method of, and apparatus for, retarding a vehicle equipped with an epicyclic gearbox in which a reverse gear train is included. In normal operation to engage reverse gear the reverse gear train contains a reaction member which is clamped to reverse the direction of rotation of the gearbox output shaft. To provide for retardation the reverse gear reaction member is not clamped but the clamping means is operated to allow slipping or intermittent operation of the reverse gear train so providing a retarded but not reversed operation of the output shaft.
    Type: Grant
    Filed: December 29, 1977
    Date of Patent: July 7, 1981
    Assignee: British Leyland UK Limited
    Inventors: Stanley F. Burnett, Michael Dunkley, Raymond M. Grimes, Keith Parmee