Constant pressure pump

Details Constant pressure pump Constant pressure pump

1974-08-26

1976-04-20

Freeh, William L.

Pumps

Motor driven

Spring or weight motor

417478, F04B 4312, F04B 4506

Patent

active

039515710

ABSTRACT:
A constant pressure pump in which a tube containing the fluid is squeezed between an anvil and a ram, the two surfaces of which are shaped so as to maintain the same area of contact between the ram and the tube in a plane substantially perpendicular to the motion of the ram during substantially the entire squeezing operation and wherein the collapsed portions of the tube are permitted to escape from the ram area into slots substantially parallel with the motion of the ram.

REFERENCES:
patent: 1762890 (1930-06-01), Rogers
patent: 2059803 (1936-11-01), Mann
patent: 3495540 (1970-02-01), Edwards

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