Monitoring device for swinging deadlock

Details Monitoring device for swinging deadlock Monitoring device for swinging deadlock

1997-05-05

1998-10-20

Tong, Nina

Communications: electrical

Condition responsive indicating system

Specific condition

340686, 292340, 70436, 70441, E05B 4506

Patent

active

058252886

ABSTRACT:
A monitoring device for narrow stile, metal frame doors having a mounting plate securable to the door jamb adjacent the strike slot. A switch is mounted on a bracket extending from the face plate and the switch is connectable to an existing alarm system. A trigger normally engages the switch actuator pin. When the closure or door is closed and the dead bolt engaged in the strike slot, the trigger will disengage the pin allowing the alarm system to be armed.

REFERENCES:
patent: 3710052 (1973-01-01), Jette, Jr.
patent: 3810145 (1974-05-01), Gusaras
patent: 3967080 (1976-06-01), Errani
patent: 3968337 (1976-07-01), Cole
patent: 4465997 (1984-08-01), Hines
patent: 4717909 (1988-01-01), Davis
patent: 4935587 (1990-06-01), Pattermann
patent: 5062670 (1991-11-01), Grossman
patent: 5257841 (1993-11-01), Geringer et al.

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