Door control device with alarm switch

Details Door control device with alarm switch Door control device with alarm switch

1986-08-11

1988-01-26

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

With particular system function

340545, 340549, 340686, 116 89, 200 617, 200 6162, 49 13, G08B 1900, G08B 1308

Patent

active

047219467

ABSTRACT:
An apparatus for monitoring the condition of a door which is biased toward a closed position by a closer arm connected to and biased by a door control device including a switch responsive to the position of the closer arm and signaling means connected to the switch. The switch is operable to activate the signaling means and establish a signal in response to the closer arm being disconnected from the door control device and when the door is moved from its fully closed position.

REFERENCES:
patent: 3715537 (1973-02-01), Peterson
patent: 3926140 (1975-12-01), Bargiel
patent: 4016381 (1977-04-01), Rodseth
patent: 4049934 (1977-09-01), Newlon

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