Pneumatic metering pump apparatus

Details Pneumatic metering pump apparatus Pneumatic metering pump apparatus

1983-10-20

1986-01-21

Smith, Leonard E.

Pumps

Motor driven

Fluid motor

91318, 91469, F04B 912

Patent

active

045655049

ABSTRACT:
A pneumatic metering pump apparatus, having a pump member, working in combination with power head means wherein a pneumatically driven piston would cooperate with the pump means. There would be further provided a fluid inlet providing fluid flow to the power head and a valving element in communication with the first fluid inlet and the piston. Further, a timer would be in fluid communication with the valve and piston, would also include a valving element housed in the valving member for providing fluid communication between the valving member and the piston when the valving member is in the first position and blocking fluid communication between the valving member and the piston and establish fluid communication between the piston and an exhaust when the valving member is in a second position.

REFERENCES:
patent: 3387563 (1968-06-01), Williams et al.
patent: 3492946 (1970-02-01), Martin
patent: 3561324 (1971-02-01), Obergfell
patent: 4102609 (1978-07-01), Wood

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