Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1997-06-09
1999-06-22
Lee, Benjamin C.
Communications: electrical
Condition responsive indicating system
Specific condition
340665, 340666, 340668, 3406939, 340531, 367199, G08B 1314
Patent
active
059146583
ABSTRACT:
A crime prevention display device is disclosed which includes a casing (21) provided therein with a chuck mechanism (20) for gripping a wire (W) inserted therethrough, a crime prevention alarm circuit (3) connected to the casing and a load detection means (40, 66, 25) for detecting a variation in load applied from an exhibit to the device. The load detection means (40) detects that removal of the exhibit held on the display device causes the device to be unloaded, so that the crime prevention alarm circuit (3) generates an alarm, leading to warning of the abnormality. Also, the crime prevention alarm circuit (3) generates an alarm sound, which is then collected by a sound wave receiver, followed by inputting of the alarm sound to a centralized control equipment (13), so that it may positively exhibit a crime prevention alarm function without causing any malfunction.
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