Barrier and alarm for blocking a passageway

Details Barrier and alarm for blocking a passageway Barrier and alarm for blocking a passageway

1990-08-06

1992-02-18

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

Specific condition

340546, 340548, 340689, G08B 1300

Patent

active

050898060

ABSTRACT:
The apparatus described herein is a chain with a warning sign attached to it, that incorporates an audible alarm signal which is activated when a person moves the chain away from an egress that it is blocking, such as a supermarket check-out lane. The apparatus solves the problem of how to block a check-out lane so as to draw attention to any patron who is exiting the store by way of an unattended check-out lane, yet is a device that can be easily discarded from the egress, in the event of an emergency. The unique sign incorporates circuitry within. In the preferred embodiment, the sign is a sandwich with outer layers that have something appropriate printed on them, such as "ALARMED EXIT--For Emergency Use Only", and the inner, hidden portion contains an audible alarm, a battery, an arming switch and position sensitive contacts for detecting when an unauthorized person tampers with the barrier. The ON/OFF switch is available on the outside of the sign, but the switch is recessed and hard to locate if you don't know that it is there.

REFERENCES:
patent: 4005397 (1977-01-01), Blair
patent: 4808974 (1989-02-01), Cantley

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