Door lock

Details Door lock Door lock

1987-09-22

1989-07-04

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

Specific condition

70432, 200 6164, 200 6167, 340547, E05B 4506, G08B 1308, H01H 2706

Patent

active

048454710

ABSTRACT:
A door lock including a housing, a bolt assembly, a lock mechanism engaged with the bolt assembly and capable of being operated to move the bolt assembly from a locked to an unlocked position, and vice versa. The door lock includes a first switch secured to the housing and in the moving path of the bolt assembly, and adapted to couple with an alarm apparatus, for turning on the alarm apparatus when the bolt assembly is moved to the locked position, and for turning off the alarm apparatus when the bolt assembly is moved to the unlocked position.

REFERENCES:
patent: 3810145 (1974-05-01), Gusaras
patent: 3833899 (1974-09-01), Blosse
patent: 4241337 (1980-12-01), Prada
patent: 4565994 (1986-01-01), Mochida et al.

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