Alarm for a sliding door or the like

Communications: electrical – Condition responsive indicating system – Specific condition

Patent

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Details

200 6173, 200 6193, G08B 1308

Patent

active

044727097

ABSTRACT:
An alarm for a sliding door or the like is provided. The alarm is operatively associated with a movable frame and a stationary frame of a sliding door assembly. It has a plunger engagable with one frame or the other, which plunger is urged outwardly and activates a signal if the alarm is removed from its position. The alarm includes a case in which a modular component can be inserted with the component including a source of power, contacts, and a signal which can be an audible signal or a sending signal which activates a remote burglar alarm. The case of the alarm has a lock which can lock the plunger in place when the alarm is removed by the occupant. The plunger is also designed to be prevented from being pushed back into the case to turn off the alarm without the use of an elongate element insertable into an access opening in the case.

REFERENCES:
patent: 2870281 (1959-01-01), Mitchell
patent: 3402405 (1968-09-01), Contreras
patent: 3797005 (1974-03-01), Schwarz
patent: 3797006 (1974-03-01), Reininger
patent: 4193067 (1980-03-01), Hawkins
patent: 4266216 (1981-05-01), Trusty

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