Timer unit for controlling valves

Details Timer unit for controlling valves Timer unit for controlling valves

1992-10-28

1994-05-10

Michalsky, Gerald A.

Fluid handling

Systems

Programmer or timer

13762411, 1376242, G05B 1906, F16K 3148

Patent

active

053099427

ABSTRACT:
An inexpensive timer unit which can operate stably in the event of a power failure. The timer unit acts to switch the operation times of two valve mechanisms for opening and closing fluid passages. The unit comprises a rotatable windup shaft, a torsion coil spring, an eddy-current-generating governor mechanism, and two cams. Energy is stored in the spring by rotating the windup shift through a given angle so as to tighten the spring. The speed of rotation of the windup shaft when the tightened spring is released is adjusted by the governor mechanism. At this time, the rotation of the windup shaft is transmitted to the cams. The profiles of the cams are determined according to the operation times of the valve mechanisms.

REFERENCES:
patent: 2098815 (1937-11-01), Van Veen
patent: 2772067 (1956-11-01), Wilson
patent: 2995150 (1961-08-01), Engholdt
patent: 3074204 (1963-01-01), Tatone
patent: 4022239 (1977-05-01), Schwindt et al.
patent: 4180099 (1979-12-01), Moore

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