Fluid dispensing system

Details Fluid dispensing system Fluid dispensing system

1983-09-14

1986-09-09

Rolla, Joseph J.

Dispensing

With discharge assistant

With discharge volume varying means

222309, 222334, 222380, 417403, 417454, G01F 1106, G01F 1130, G01F 1136

Patent

active

046103775

ABSTRACT:
An electronically controlled, pneumatically actuated pumping system is provided that is especially designed for the precision dispensing of liquids. The system includes a positively actuated inlet valve, and a small-diameter, long-stroke pumping piston that is physically stopped at each end of its stroke. The unique inlet valve and piston enable the system to repetitively dispense metered volumes of fluid at better than one tenth of one percent accuracy. A unique calibration mechanism and detachable dispensing head allow for the rapid disassembly, cleaning, and reassembly of the system. An alternative embodiment of the pumping system incorporates a plurality of dispensing nozzles controlled by a single inlet valve and pumping piston combination. The dispensing unit may be shiftably mounted on a vertically oriented stand, and may be automatically shifted upwardly as fluid is dispensed to minimize splashing and atomizing of the dispensed fluid.

REFERENCES:
patent: 2308974 (1943-01-01), Harper
patent: 2905361 (1959-09-01), Noall
patent: 3162336 (1964-12-01), Erickson
patent: 3227325 (1966-01-01), Bates
patent: 3341076 (1967-09-01), Wasilewski et al.
patent: 3785526 (1974-01-01), Shinn
patent: 4055281 (1977-10-01), Rosen et al.
patent: 4273261 (1981-06-01), Krueger
patent: 4477232 (1984-10-01), Mayer

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