Fluid pumping device

Details Fluid pumping device Fluid pumping device

1977-01-24

1978-07-25

Freeh, William L.

Pumps

One fluid pumped by contact or entrainment with another

Liquid piston

92103R, F04F 1100

Patent

active

041026055

ABSTRACT:
A pump with a plunger assembly that is received within an outer housing containing a fluid. The plunger assembly includes a slidable sleeve portion defining a vertical channel. A pair of thermally conductive, flexible membranes form outer and inner chambers within the vertical channel. One of the flexible membranes is detachably secured to the slidable sleeve portion, the other membrane constituting a common wall that separates the chambers. A charging fluid is fed to the outer chamber through an inlet valve and exits therefrom through an exhaust valve. A fluid to be pumped is fed to the inner chamber through an inlet valve and exits therefrom through an exhaust valve. The charging fluid governs the interior profile within the vertical channel for providing variable pressure to volume ratios within the chamber.

REFERENCES:
patent: 1764712 (1930-06-01), Brackett et al.
patent: 2505198 (1950-04-01), Moskowitz et al.
patent: 2619907 (1952-12-01), Paterson
patent: 2795196 (1957-06-01), Moskowitz
patent: 3485176 (1969-12-01), Telford et al.
patent: 4021148 (1977-05-01), Moskowitz

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