Liquid dispensing device which delivers a pre-set, constant volu

Details Liquid dispensing device which delivers a pre-set, constant volu Liquid dispensing device which delivers a pre-set, constant volu

1987-12-17

1989-06-27

Rolla, Joseph J.

Dispensing

Floating piston with plural or alternate discharge

222 16, 222389, G01F 1104

Patent

active

048421677

ABSTRACT:
A liquid dispensing device delivering a constant volume independent of the pressure and volume of the liquid received comprising a cylinder which houses a mobile, sealed piston. The piston moves against the reaction of elastic devices owing to the pressure of a liquid supplied through an orifice of an ancillary cylinder. A valve associated with the shaft of a small piston mounted in a mobile fashion in the ancillary cylinder controls the flow of the liquid through the orifice. The small piston is moved by the action of a plunger against the reaction of elastic devices. The plunger is controlled by a thermoactuator.

REFERENCES:
patent: 2921351 (1960-01-01), Momm
patent: 3537620 (1970-11-01), Artmani

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