Audible warning device with restrainable, shock-activated cocked

Details Audible warning device with restrainable, shock-activated cocked Audible warning device with restrainable, shock-activated cocked

1998-09-08

2000-06-13

Hofsass, Jeffery A.

Communications: electrical

Condition responsive indicating system

Specified indicator structure

340689, 340546, 340908, 42 65, G08B 300

Patent

active

060754508

ABSTRACT:
A shock-activated, sonic alarm is silent when in a stored or cocked condition. In the cocked or armed condition, a spring-loaded plunger (160) is restrained by a ring (200) from activating an alarm (100). When the alarm is dealt a sharp blow, the plunger (160) is dislodged and freed from the ring so that its spring (170) forces it against a cap (120) or a switch (410), resulting in a loud alarm. The alarm can be placed in any location where it is desirable to sound an alarm in response to a physical trauma, such as in a traffic barrier or dangerous goods shipment.

REFERENCES:
patent: 3660817 (1972-05-01), Abrams
patent: 4679033 (1987-07-01), Hwang
patent: 4896139 (1990-01-01), Eldridge
patent: 5166665 (1992-11-01), McCarthy
patent: 5548914 (1996-08-01), Anderson
patent: 5565642 (1996-10-01), Heitz
patent: 5661474 (1997-08-01), Douglas

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