Cyclic pump

Details Cyclic pump Cyclic pump

1975-12-22

1977-09-13

Croyle, Carlton R.

Pumps

Successive stages

With interstage discharge or additional discharge from...

417258, F04B 300, F04B 500

Patent

active

040478459

ABSTRACT:
The output from the pump chamber of a higher volume piston pump is divided between a return bypass and the pump chamber of a smaller volume piston pump; the piston of the high volume piston pump is periodically raised by a cam to draw fluid into the pump chamber; when this piston is released, a spring forces fluid from the high volume pump chamber; the pump chamber of the small volume pump is connected with the cam such that the volume of the low volume pump chamber decreases, thereby pumping out the fluid in that chamber, when the large volume pump chamber is taking in fluid, and vice versa; appropriate valves ensure that flow is only in the desired direction; adjustment and calibration means are provided for the low volume pump.

REFERENCES:
patent: 1051888 (1913-02-01), Hochgesand
patent: 1169707 (1916-01-01), Williams
patent: 1742746 (1930-01-01), Zubaty
patent: 2357870 (1944-09-01), Beeh
patent: 2603158 (1952-07-01), Nemetz
patent: 2981198 (1961-04-01), Nettel

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