Remote switch position indicator

Details Remote switch position indicator Remote switch position indicator

1983-09-12

1986-03-25

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

With particular system function

340500, 340509, 340512, 340513, 340524, 340505, G08B 2600

Patent

active

045786690

ABSTRACT:
A remote sensing and indicating system for monitoring and displaying at a central operating location the state or position of a remotely located multiple state element. The multiple state element may be a subsea valve which may be either in an open state or a closed state. The system electronically scans valve position switches, stores data indicating the position and drives lamps to display valve position. Switches at the remotely located valve are selectively closed in response to the state of the valve. The switches are connected to the central location by only two leads.

REFERENCES:
patent: 3716834 (1973-02-01), Adams
patent: 4144528 (1979-03-01), Johnson, Sr.
patent: 4262286 (1981-04-01), Tanigawa
patent: 4422067 (1983-12-01), Clark et al.
patent: 4528610 (1985-07-01), Payne

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