High accuracy cam-operated fill control

Details High accuracy cam-operated fill control High accuracy cam-operated fill control

1992-05-22

1992-11-24

Cohan, Alan

Fluid handling

Processes

13762411, F16K 3102

Patent

active

051654377

ABSTRACT:
A high accuracy fill control is accomplished by using a drop-drop cam-operated timer switch in parallel with an electromagnetic water valve in series with a motor start relay and main motor machine windings. The drop-drop cam-operated timer switches almost instantaneously from one position to another, so the timer air gap variable created by the normal rise to make and activate transition is eliminated and other variables are not introduced.

REFERENCES:
patent: 3344625 (1967-10-01), Fogt
patent: 3362197 (1968-01-01), Reed
patent: 3490486 (1970-01-01), Cushing
patent: 3648487 (1972-03-01), Hoffman

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