Device for protecting works of art

Details Device for protecting works of art Device for protecting works of art

1981-09-01

1984-07-03

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

200 6151, 200 6152, G08B 1314

Patent

active

044582412

ABSTRACT:
An anti-theft device having a pair of contact elements mountable on a picture frame, one of the elements being pendulously swingable with reference to the other so as to contact or break contact with the other element when the picture is disturbed, and thereby actuating a circuit which sets off an alarm.

REFERENCES:
patent: 1068928 (1913-07-01), Pucel
patent: 2448181 (1948-08-01), Holm
patent: 3389236 (1968-06-01), Guthart
patent: 3674950 (1972-07-01), Scoville
patent: 3760402 (1973-09-01), Magerle et al.
patent: 4039789 (1977-08-01), Hase
patent: 4101876 (1978-07-01), Lurkis et al.

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