Dispensing – Processes of dispensing
Patent
1987-05-22
1990-05-22
Shaver, Kevin P.
Dispensing
Processes of dispensing
222 23, 222 25, 222 72, 222318, B67D 516
Patent
active
049270567
ABSTRACT:
In one embodiment, the high viscosity fluid to be metered and dispensed is oil that is pumped at a low flow rate, in the range of one quart per minute. A positive displacement pump obtains the oil from a tank and pumps the oil to an air eliminator. A volumetric meter is downstream of the air eliminator and receives the oil therefrom via a hydraulic system line. An electronic detector/pulser produces signals based upon the flow of oil through the meter. In a working embodiment, 1,000 pulses represent one quart of oil. These pulses are applied to a controller which includes an adjustable calibration circuit that corrects for system characteristics in order to dispense a "legal" quart of oil to a customer. The controller has an input device and a comparator that enables the controller, after being programmed, to dispense, for example, two quarts of oil. A control signal is supplied to the pump which turns on the pump and another control signal is supplied to an ON/OFF valve near the distal end of the system line. Preferably, a high flow rate and low flow rate signal is utilized as the ON signal to a two stage solenoid valve that is the ON/OFF valve. The system line terminates at the island where the oil is dispensed by a nozzle controlled by the customer. At the distal most end of the nozzle a check valve is utilized to maintain the system integrity.
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Kain, Jr. Robert C.
RSL Industries, Inc.
Shaver Kevin P.
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