Switch position sensing device for use with valve operators

Details Switch position sensing device for use with valve operators Switch position sensing device for use with valve operators

1985-11-01

1987-06-09

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Nonquantitative

324422, 340644, 137554, G01R 1914, G08B 1710

Patent

active

046723102

ABSTRACT:
A switch position sensing device gives visual and recorded information as to the relative open and closed position of a monitored switch whether the monitored switch is found within an AC or DC circuit or a dead circuit and without disturbing the wiring of the switches primary circuit.

REFERENCES:
patent: 4542649 (1985-09-01), Charbonneau et al.
patent: 4575718 (1986-03-01), Ludowyk
patent: 4578669 (1986-03-01), Woods

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