Dispensing – With discharge assistant – Motor operated
Patent
1978-02-10
1979-11-20
Spar, Robert J.
Dispensing
With discharge assistant
Motor operated
222385, 417360, B67D 504, F04B 3504
Patent
active
041747917
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.
REFERENCES:
patent: 3112049 (1963-11-01), Messer
patent: 3369715 (1968-02-01), Carter
patent: 3876120 (1975-04-01), Haesloop et al.
patent: 3963381 (1976-06-01), Kohnen
Auchter Bruno
Glimm Gunter
Preiss Manfred
Wagner Karl-Heinz
Rheinhutte vorm. Ludwig Beck & Co.
Siemens Aktiengesellschaft
Spar Robert J.
Wacyra Edward M.
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