Security attache case with automatic alarm system

Details Security attache case with automatic alarm system Security attache case with automatic alarm system

1978-07-13

1980-05-20

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

340689, G08B 1314

Patent

active

042042020

ABSTRACT:
An attache case with a built-in alarm circuit does not differ in external appearance from a conventional attache case. It has a handle fastened to the body by two sets of metal studs and two locks. The alarm circuit is controlled by a pair of silicon controlled switches connected, respectively, between a first lock and a first set of studs and between the first lock and the second set of studs. Setting the case in a vertical or horizontal position and simultaneously touching the first lock and first set of studs operates the first silicon controlled switch to arm the alarm circuit, which will be actuated by a gravity switch if the case is subsequently moved. Simultaneously touching the first lock and the second set of studs operates the second silicon controlled switch to actuate the alarm instantly. The other lock is used as an on/off switch for the alarm system.

REFERENCES:
patent: 919385 (1909-04-01), Ruthven
patent: 2038625 (1936-04-01), Adler
patent: 2927311 (1960-03-01), Donaldson
patent: 4117468 (1978-09-01), Va'squez
patent: 4155079 (1979-05-01), Chiu et al.

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