Liquid metering pump

Details Liquid metering pump Liquid metering pump

1980-03-03

1982-09-14

Scherbel, David A.

Dispensing

Plural sources, compartment, containers and/or spaced jacket

Cabinet-type dispenser for single mixed drinks

222136, 222309, 222334, B67D 556

Patent

active

043491308

ABSTRACT:
Metering apparatus combining a motor operated by a first liquid, and a pump driven by the motor to meter a selectably variable volume of a second liquid. The motor has a liquid-operated piston and a shuttle valve to control the flow of operating liquid to the piston. The piston drives a pump actuating rod which, in turn, engages a floating pump piston. The effective stroke of the floating pump piston can be varied to adjust the volume of liquid pumped in response to each cycle of the motor.

REFERENCES:
patent: 2443568 (1948-06-01), Palm
patent: 2566436 (1951-09-01), Waite
patent: 2637304 (1953-05-01), Dinkelkamp
patent: 2736466 (1956-02-01), Rodth
patent: 2862478 (1958-12-01), Staats
patent: 3205830 (1965-09-01), Clark
patent: 3250247 (1966-05-01), Beaman
patent: 3640433 (1972-02-01), Rodth
patent: 3799402 (1974-03-01), Meister et al.
patent: 3982899 (1976-09-01), Kelm

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