Pumps – Motor driven – Fluid motor
Patent
1981-07-29
1987-11-10
Look, Edward K.
Pumps
Motor driven
Fluid motor
417388, 417426, 417499, F04B 908
Patent
active
047054611
ABSTRACT:
A proportioning pump with tandem diaphragm pumps each having a pumpage chamber connected with a source of supply and a mixer and dispensing nozzle, a piston pump for operating each of the diaphragm pumps, a common eccentric drive for the pistons of the piston pumps, the piston pumps having cylinder wall sleeves extending into the hydraulic fluid reservoir, the sleeves having refill ports therethrough communicating between the pump chamber and the reservoir, one of the sleeves being longitudinally adjustable, a double threaded rotary control for the longitudinal adjustable cylinder wall sleeve, bypass pressure relief valves and passages for the hydraulic fluid from the pump chambers returning fluid to the reservoir in the event of excessive pressure, and the pump motor having a variable speed drive for widely varying the speed of the pump.
REFERENCES:
patent: 1782975 (1930-11-01), Schaer
patent: 2266125 (1941-12-01), Malsbary et al.
patent: 2439879 (1948-04-01), Allen
patent: 2506235 (1950-05-01), Nicolls
patent: 2752854 (1956-07-01), Prior et al.
patent: 2948223 (1960-08-01), Mashinter
patent: 3285182 (1966-11-01), Pinkerton
patent: 3338171 (1967-08-01), Conklin et al.
patent: 3612727 (1971-10-01), Drake
patent: 3715174 (1973-02-01), Davis et al.
patent: 3779669 (1973-12-01), Sommer
patent: 3918846 (1975-11-01), Winkler
Look Edward K.
Seeger Corporation
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