Single-acting, gas-operated pump

Details Single-acting, gas-operated pump Single-acting, gas-operated pump

1987-07-17

1989-05-09

Smith, Leonard E.

Pumps

Motor driven

Fluid motor

91347, F04B 4306

Patent

active

048284653

ABSTRACT:
A single-acting, gas-operated, pump method and apparatus including a pump body having a main chamber divided by a reciprocating piston assembly into a gas driving chamber and a liquid pumping chamber, a spring for biasing the piston assembly into one of its two end positions, a reciprocating control valve controlling the flow of driving gas to and from the gas driving chamber, a snap-acting spring mechanically coupling the control valve to the reciprocating movement of the piston assembly, and a counteracting spring for biasing the control valve toward one of its two positions.

REFERENCES:
patent: 1067613 (1913-07-01), Lane
patent: 3299826 (1987-01-01), Williams

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