Pneumatically controlled rate pump

Details Pneumatically controlled rate pump Pneumatically controlled rate pump

1981-11-09

1983-09-20

Smith, Leonard E.

Pumps

Motor driven

Fluid motor

91 38, 91219, 91307, 13762414, F04B 1700

Patent

active

044052928

ABSTRACT:
A pneumatic pump includes a pneumatic cycling mechanism that permits the commencement of each successive pumping interval only upon the appearance of a pilot signal. The pilot signal is generated by a pneumatically operated pump timer that determines the pumping interval. The pilot signal is terminated during the pumping interval after a signal timer has timed out. The pump, timers and other pneumatic circuit elements are driven by the same source that powers the pump, and no reference to an externally generated timing signal is required.

REFERENCES:
patent: 3174409 (1965-03-01), Hill
patent: 3516763 (1970-06-01), Manton
patent: 3590582 (1971-07-01), German
patent: 3604415 (1971-09-01), Hoenig
patent: 3872876 (1975-03-01), Bachman
patent: 4354524 (1982-10-01), Higgins

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