Patents by Inventor Randolf Körtge

Randolf Körtge 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).

  • Hydraulic delivery device
    Patent number: 6428285
    Abstract: The invention relates to a hydraulic delivery device with a displacement unit which delivers a medium from a suction connection under output pressure to a pressure connection, connectable with a consumer, and under consumer pressure, and a regulating device for setting and/or limiting a volume flow delivered by the delivery device.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: August 6, 2002
    Assignee: LuK Fahrzeung-Hydraulik GmbH & Co. KG
    Inventors: Peter Breuer, Van Doan Nguyen, Hans-Jürgen Lauth, Randolf Körtge, Martin Jordan, Volker Seipel, Christof Lausser
  • Valve assembly
    Patent number: 6263909
    Abstract: A valve assembly for a hydraulic discharge device and including a piston displaceable in a bore of a housing of the discharge device against a biasing force and having an outer surface, which sealingly engages an inner wall of the housing bore and blocks a channel opening into the bore so that the piston functions as a slide valve for this channel, the valve assembly further including a valve seat which, together with the piston, forms a seated valve.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: July 24, 2001
    Inventors: Van Doan Nguyen, Yuejin Gong, Randolf Körtge, Hans Jürgen Lauth, Gerhard Overdiek, Willi Parsch, Thomas Nied-Menninger
  • Hydraulic delivery device
    Patent number: 6227816
    Abstract: The invention relates to a hydraulic delivery device with a displacement unit which delivers a medium from a suction connection under output pressure to a pressure connection, connectable with a consumer, and under consumer pressure, and a regulating device for setting and/or limiting a volume flow delivered by the delivery device.
    Type: Grant
    Filed: June 23, 1999
    Date of Patent: May 8, 2001
    Assignee: LuK Fahrzeug-Hydraulik GmbH & Co. Kg
    Inventors: Peter Breuer, Van Doan Nguyen, Hans-Jürgen Lauth, Randolf Körtge, Martin Jordan, Volker Seipel, Christof Lausser