Piston proportioning pump

Details Piston proportioning pump Piston proportioning pump

1986-10-06

1988-02-02

Freeh, William L.

Pumps

Expansible chamber type

Distributor part forms traversed movable pump chamber wall...

417510, F04B 704, F04B 3910

Patent

active

047226757

ABSTRACT:
A piston proportioning pump for liquids, with a piston in a cylinder, an uptake and discharge valve and an oscillating drive is improved so that the formation of vapor bubbles or of a low pressure during the suction phase is prevented even when the pump space is filled quickly. The dead space of the piston proportioning pump still remains so small that a largely complete expulsion of the proportioned amount through the discharge valve is guaranteed. To this end, provisions are made so that the discharge communicates with the pump space within an uptake valve.

REFERENCES:
patent: 1756678 (1930-04-01), Comming
patent: 1768102 (1930-06-01), Beggen
patent: 2537336 (1951-01-01), Ericson
patent: 2854170 (1958-09-01), Borgardt et al.
patent: 3118390 (1964-01-01), Kinsley
patent: 3362335 (1968-01-01), Stephens
patent: 3868048 (1975-02-01), Soodacter
patent: 4102611 (1978-07-01), Broker
patent: 4261690 (1981-04-01), Buescher

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