Flexible tying member for theftproof device

Details Flexible tying member for theftproof device Flexible tying member for theftproof device

1982-09-28

1985-06-25

Birmiel, Howard A.

Communications: electrical

Condition responsive indicating system

Specific condition

340557, 340571, 350 9623, G08B 2900, B62H 500, G02B 514

Patent

active

045257027

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 coaxial structure comprising a central layer including one of the optical fiber and at least one electric wire, an intermediate layer including the other of these two members, and an outer wall layer including a reinforcing member.

REFERENCES:
patent: 3714644 (1973-01-01), Hellstrom
patent: 3781861 (1973-12-01), Adler, Jr.
patent: 3824540 (1974-07-01), Smith
patent: 3866205 (1975-02-01), Payne et al.
patent: 4141622 (1979-02-01), Beal
patent: 4341440 (1982-07-01), Trezequet et al.
patent: 4450434 (1984-05-01), Nielsen et al.

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