Sold-out device for syrup pump

Details Sold-out device for syrup pump Sold-out device for syrup pump

1982-10-05

1985-10-01

Freeh, William L.

Pumps

Condition responsive control of pump drive motor

Pump stop control means requiring manual reset

417 46, 417540, 222 66, 251 613, F04B 4900, F04B 1100, B67D 508

Patent

active

045443289

ABSTRACT:
A control device associated with a pneumatically-driven demand pump comprising a valve system which shuts off the gas which drives the pneumatic pump in response to a pressure-sensitive diaphragm which detects variations in pressure in the fluid output from the pump. The pressure-sensitive diaphragm serves the dual function of suppressing surges of liquid flow from the pump and stopping the pump when the liquid pressure drops below a predetermined minimum by closing a valve to shut off the gas.

REFERENCES:
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patent: 2328812 (1943-09-01), Klein
patent: 2765743 (1956-10-01), Hollinshead
patent: 2765804 (1956-10-01), Dinkelkamp
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patent: 3363412 (1968-01-01), Fischer et al.
patent: 3590859 (1971-07-01), Gotzenberger
patent: 3738776 (1973-06-01), Debare
patent: 3746036 (1973-07-01), DuBois et al.
patent: 3802462 (1974-04-01), Trosch
patent: 3816025 (1974-06-01), O'Neill
patent: 3851661 (1974-12-01), Fernandez
patent: 3874417 (1975-04-01), Clay
patent: 4247018 (1981-01-01), Credle

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