Submerged pumping system

Details Submerged pumping system Submerged pumping system

1977-10-19

1983-11-22

Knowles, Allen N.

Dispensing

With discharge assistant

Motor operated

222385, B65D 8876, B67D 550

Patent

active

RE0314455

ABSTRACT:
A submersible pumping system especially adapted to cryogenic storage systems which includes a single fluid transmitting casing extending from the top to near the bottom of the storage container, a normally closed spring biased foot valve on the bottom of the casing, a sealing gland closing the top of the casing having a shiftable portion, and a pump and motor unit suspended through the shiftable portion of the sealing gland in the casing and adapted to open the foot valve. The pump and motor unit is centered in the casing and aligned with the foot valve by mating frusto-conical collars associated with the pump and motor unit and with the valve assembly. The shiftable sealing gland allows the pump and motor unit to be lifted off the foot valve so as to close the valve without venting the casing.

REFERENCES:
patent: 2034419 (1936-03-01), Potter
patent: 2100560 (1937-11-01), Kennedy
patent: 2230830 (1941-02-01), Coberly
patent: 2901889 (1959-09-01), Reed
patent: 2969742 (1961-01-01), Arutunoff
patent: 3093269 (1963-06-01), Messer
patent: 3112049 (1963-11-01), Messer
patent: 3304877 (1967-02-01), Carter et al.

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