Patents by Inventor Arno Gradert

Arno Gradert 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).

  • Winch system control mechanism for the simultaneous control of two winch motors
    Patent number: 4088304
    Abstract: A winch system control mechanism for the simultaneous control of two winch motors includes a servo valve which is connected to an adjustable cylinder double drive pump for regulating the fluid pressure delivered from the pump to a winch motor driving a respective winch drum over which the respective cable or rope is engaged. A control means in the form of a shiftable hand lever is movable on either side of a neutral position in order to effect a heaving of the drum or a veering of the drum by regulating the position of the servo valve.
    Type: Grant
    Filed: February 23, 1976
    Date of Patent: May 9, 1978
    Assignee: O & K Orenstein & Koppel Aktiengesellschaft
    Inventor: Arno Gradert