Door locking alarm device

Details Door locking alarm device Door locking alarm device

1981-03-16

1982-11-09

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

340686, 292339, 200 6193, G08B 1308

Patent

active

043587585

ABSTRACT:
A combination door lock and alarm has an upper end clip engageable with the door handle, a shaft extending in an adjustable length tube and terminating in a non-skid rubber end adapted to engage the floor or carpet. The clip at the upper end of the shaft is angularly mounted and has its lower end lying in a plane substantially aligned with the longitudinal axis of the shaft. An alarm device is also mounted on the shaft and includes an actuator for it with a switch contact normally abutting or close to abutment with the surface of the door at a point below the door handle. Responsive to inward movement and pressure on the door the alarm will be actuated. At the same time, the locking action of the shaft and clip will divert the opening inward forces into forces directed against the floor so that the door cannot be opened.

REFERENCES:
patent: 1695686 (1928-12-01), Hess
patent: 2870281 (1959-01-01), Mitchell
patent: 4036518 (1977-07-01), Jost
patent: 4139845 (1979-02-01), Washburn

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