Patents Assigned to Rheinhutte vorm. Ludwig Beck & Co.
  • Liquid-gas pumping apparatus
    Patent number: 4174791
    Abstract: A liquid-gas pumping apparatus includes an immersion pump and motor unit vertically slidable within a housing extending into a cryogenic liquid storage tank, a plurality of valves opened by engagement with the pump and motor unit are circumferentially spaced adjacent the bottom of the housing with one of the valves adapted to be opened before the other valves and permanent electrical supply contacts extending through the housing to be engaged by contacts on the pump and motor unit.
    Type: Grant
    Filed: February 10, 1978
    Date of Patent: November 20, 1979
    Assignees: Rheinhutte vorm. Ludwig Beck & Co., Siemens Aktiengesellschaft
    Inventors: Bruno Auchter, Karl-Heinz Wagner, Gunter Glimm, Manfred Preiss