Patents by Inventor Stefan Kalt

Stefan Kalt 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).

  • Method and apparatus for temperature stabilization in gear pumps
    Patent number: 6280164
    Abstract: A method stabilizes the temperature in a gear pump lubricated with material to be delivered. At least one housing part has at least two slide bearings in which shafts are mounted and are lubricated by medium to be delivered. A medium is adjusted in a temperature stabilizer to a predetermined temperature and then flows firstly through the housing part and secondly through shafts and/or slide bearings to stabilize the temperature.
    Type: Grant
    Filed: November 9, 1998
    Date of Patent: August 28, 2001
    Assignee: Maag Pump Systems Textron AG
    Inventors: Stefan Kalt, Michael Heinen
  • Gear pump
    Patent number: 5253988
    Abstract: Method and apparatus for on-site cleaning of a gear pump by coupling the gear pump outlet to the gear pump inlet and to the inlet end of the passage and which bypasses the bearing and is preferably controlled by a valve element which can block off the bypass in normal operation and be opened for a cleaning operation to increase the pressure on the side of the bearing connected to the inlet and thereby increase the velocity of the flushing stream.
    Type: Grant
    Filed: February 27, 1992
    Date of Patent: October 19, 1993
    Assignee: Maag Pump Systems AG
    Inventors: Alfred K. Hunziker, Fritz Haupt, Eduard Mischler, Stefan Kalt