Control device for a valve actuator

Details Control device for a valve actuator Control device for a valve actuator

1976-03-19

1979-01-23

Franklin, Lawrence R.

Registers

With control means operable on predetermined register reading

200 18, 200153L, G06M 1276

Patent

active

041356616

ABSTRACT:
In a control device such as a valve actuator, the improvement comprises means for indicating the number of revolutions undergone by the valve actuator. The rotatable valve actuator drives a plurality of spaced-apart shafts which are geared to each other in suitable driving ratios with each shaft carrying an indicator to indicate the angular position of that shaft. The combination of indicators provides an indication of the number of revolutions by the valve actuator. Means can also be provided to operate one or more sets of electrical contacts when a predetermined digital indication is reached.

REFERENCES:
patent: 2581859 (1952-01-01), Hoye
patent: 2764350 (1956-09-01), Braatz
patent: 3182908 (1965-05-01), Wahli et al.
patent: 3205651 (1965-09-01), Stiffler
patent: 3974962 (1976-08-01), Sulzer

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