Emergency supervisory system

Details Emergency supervisory system Emergency supervisory system

1986-07-21

1988-06-21

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

307151, 34082505, 34082516, 370 88, 364492, H04Q 900

Patent

active

047526980

ABSTRACT:
The present invention relates to an emergency supervisory system which comprises a plurality of supervisory apparatus provided for respective supervisory regions and connected in parallel with each other to signal lines derived from a central signal station; and switching devices which are provided at positions for separate the supervisory apparatus from each other and adapted to be closed normally and opened upon detection of short-circuiting to separate the supervisory apparatus adjacent thereto from the lines, thereby to supervise an emergency such as a fire through one or both of the signal lines.

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patent: 4567482 (1986-01-01), Dolsen et al.
patent: 4568919 (1986-02-01), Muggli et al.
patent: 4583088 (1986-04-01), Bux et al.
patent: 4612534 (1986-09-01), Buehler et al.

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