Patents by Inventor John M. L. Roberts

John M. L. Roberts 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).

  • Balancer for internal combustion engine
    Patent number: 4802450
    Abstract: A balancing arrangement is provided for balancing the secondary out of balance forces of four cylinder in line engines. A gearwheel carried on the crankshaft transmits drive to a further gearwheel and each of the gearwheels is arranged to drive a balancing wheel. The balancing wheels are driven in opposite directions at twice the rotational speed of the engine. Each wheel is provided with adjustment means whereby backlash in the wheels is taken up. The arrangement is of particular application to motorcycles.
    Type: Grant
    Filed: February 20, 1987
    Date of Patent: February 7, 1989
    Assignee: Triumph Motorcycles (Coventry) Limited
    Inventor: John M. L. Roberts