Door block alarm

Details Door block alarm Door block alarm

1995-02-16

1995-11-21

Swann, Glen

Communications: electrical

Condition responsive indicating system

Specific condition

200 6193, 340542, 340665, G08B 1308

Patent

active

054691397

ABSTRACT:
A latch and alarm device for securing a door activates an alarm of 110-120 decibels for approximately 60 seconds if a force on the door exceeding about 20-30 pounds is detected. The device may be used with either left or right-hinged doors. A panic switch on the device may be used in an emergency to activate the high-output alarm.

REFERENCES:
patent: 372326 (1887-11-01), Palmenberg
patent: 3263040 (1966-07-01), Bliven
patent: 3406386 (1968-10-01), Hawkins
patent: 3810145 (1974-05-01), Gusaras
patent: 4360803 (1982-11-01), Heiland
patent: 5250927 (1993-10-01), Nevels

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