Double acting piston pump for cryogenic medium

Details Double acting piston pump for cryogenic medium Double acting piston pump for cryogenic medium

1972-11-09

1976-11-09

Freeh, William L.

Pumps

Expansible chamber type

Plural pumping chambers

417901, F04B 2102, F04B 3910

Patent

active

039908160

ABSTRACT:
A double acting piston pump for cryogenic mediums is disclosed. The pump includes a vertically positioned cylinder having a base portion and a cover portion, and inlet valves are disposed in the cover portion and the base portion for admitting the cryogenic medium into the cylinder and for providing a pressure component of approximately zero against the direction of flow of the cryogenic medium. Outlet valves are disposed in the cover portion and the base portion for discharging the cryogenic medium from the cylinder. A piston is slideably mounted in the cylinder and a drive rod connected to the piston extends through either the cover portion or the base portion of the cylinder. A drive arrangement engages the drive rod for actuating the piston. A housing is also provided which has a portion defining the cylinder. The drive rod and the drive arrangement are mounted in the remaining portion of the housing, whereby the housing is common to the piston, the drive rod and the drive arrangement. The pump is suitable for both liquid and gaseous mediums and generates practically no frictional forces.

REFERENCES:
patent: 1930731 (1933-10-01), Thompson
patent: 2018144 (1935-10-01), Mesinger
patent: 2290829 (1942-07-01), Edwards
patent: 2972960 (1961-02-01), Philip
patent: 3083648 (1963-04-01), Putman
patent: 3180096 (1965-04-01), Peterson
patent: 3212280 (1965-10-01), Thomas et al.
patent: 3279391 (1966-10-01), Masciopinto
patent: 3422765 (1969-01-01), Schock
patent: 3478956 (1969-11-01), Gosha
patent: 3692438 (1972-09-01), Schapol

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