Patents by Inventor Herman W. Behrens

Herman W. Behrens 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).

  • Valve with noise reducing two stage pressure drop
    Patent number: 5417244
    Abstract: A valve for controlling flow of hydraulic fluid. The valve includes first and second relatively movable valve members (60 and 62). The valve members (60 and 62) include cooperating surfaces (112, 142, 144) which define first and second orifices for metering fluid from a pressurized fluid source (44) toward first and second locations (22 and 24) in a fluid utilization device (12). The valve members (60 and 62) have a displaced position in which the first orifice is increased in size and the second orifice is decreased in size. The increased size of the first orifice reduces a pressure drop across the first orifice. The decreased size of the second orifices increases a pressure drop across the second orifice. The valve members (60 and 62) include means (114 and 146) for increasing a pressure on a downstream side of the second orifice to reduce the pressure drop for controlling valve noise.
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: May 23, 1995
    Assignee: TRW Inc.
    Inventors: Herman W. Behrens, Wendell L. Gilbert, George M. Harpole, Jane M. Lin, Michael F. Wolff