Patents by Inventor Dieter Burckardt

Dieter Burckardt 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).

  • Steering valve for hydrostatic drive
    Patent number: 4203290
    Abstract: The inflow of fluid from a motor driven pump is divided into two flow streams at a flow rate ratio selectively adjusted through a manually actuated flow divider valve. The adjusted flow rate ratio is maintained constant by a pressure control device within two outflow conduits interconnected by secondary throttling branches to regulate pressure as a function of outflow rates.
    Type: Grant
    Filed: November 20, 1978
    Date of Patent: May 20, 1980
    Assignee: Zahnradfabrik Friedrichshafen, AG
    Inventor: Dieter Burckardt