Flexible fiber optic tying member for theftproof device

Details Flexible fiber optic tying member for theftproof device Flexible fiber optic tying member for theftproof device

1984-09-19

1986-03-04

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

350 9623, H01J 516

Patent

active

045741921

ABSTRACT:
A flexible tying member for a theftproof device which is adapted to give warning in response to a change in a photo signal transmitted in an optical fiber extending through the flexible tying member. The flexible tying member has a first layer including the optical fiber and at least one electric wire connected to at least one optoelectric element, and a second layer including a reinforcing member. The flexible tying member has a coaxial structure having an inner layer formed by the above first layer, and an outer layer formed by the above second layer, or a parallel structure in which the above first and second layers longitudinally extend parallel with each other.

REFERENCES:
patent: 4275294 (1981-06-01), Davidson
patent: 4278835 (1981-07-01), Jackson
patent: 4307386 (1981-12-01), Bridge
patent: 4399430 (1983-08-01), Kitchen
patent: 4450434 (1984-05-01), Nielsen et al.

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