Dispensing – Processes of dispensing
Patent
1977-11-23
1980-03-04
Spar, Robert J.
Dispensing
Processes of dispensing
17 39, 222 14, 222 37, 222 57, 222217, B67D 522, G01F 1116
Patent
active
041913094
ABSTRACT:
A viscous products pumping machine meters the volume of product that it dispenses by simultaneously displacing a proportionate amount of fluid through a separate metering circuit. The fluid of the metering circuit also serves as the medium for driving the pumping pistons of the machine, and provision is made for obtaining an accurate measurement notwithstanding any product of fluid leakage that might occur between the pistons during operation. A pneumatic logic control system governs sequencing of the machine operations, including control of a shut-off valve in the product discharge line that can be used to portion the pumped product according to the amount of fluid that has been displaced in the metering circuit.
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patent: 2759633 (1956-08-01), Ross
patent: 2770395 (1956-11-01), Sebardt
patent: 3266433 (1966-08-01), Mason
patent: 3360094 (1967-12-01), Romanowski
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patent: 3756456 (1973-09-01), Georgi
patent: 3847511 (1974-11-01), Cole
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patent: 3981622 (1976-09-01), Hall et al.
patent: 4036564 (1977-07-01), Richards
Alley Lewis F.
White James E.
Marlen Research Corporation
Spar Robert J.
Wacyra Edward M.
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