Patents by Inventor Merle K. Burkhart

Merle K. Burkhart 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).

  • Neutral safety lock for hydraulic implement controls
    Patent number: 3942602
    Abstract: The two actuating levers of hydraulic pumps which control the direction and proportionate volumes of fluid flow to hydraulic motors in a hydraulic steering, speed, and direction control system may be locked in neutral by components located at the pumps but operated remotely from the cab of the vehicle. The geometry of the arrangement is such that any attempted movement on the part of the actuating levers once locked only tends to seat the locking components more firmly. Engine start-up is impossible unless the levers are locked in neutral.
    Type: Grant
    Filed: May 29, 1974
    Date of Patent: March 9, 1976
    Assignee: Hesston Corporation
    Inventors: Cecil L. Case, Ferol S. Fell, Merle K. Burkhart