Dye filled security seal

Details Dye filled security seal Dye filled security seal

1980-07-18

1982-04-27

Moore, Richard E.

Closure fasteners

Seals

Encasing

B65D 3334

Patent

active

043267416

ABSTRACT:
A security seal for providing an indication of unauthorized access to a sealed object includes an elongate member to be entwined in the object such that access is denied unless the member is removed. The elongate member has a hollow, pressurizable chamber extending throughout its length that is filled with a permanent dye under greater than atmospheric pressure. Attempts to cut the member and weld it together are revealed when dye flows through a rupture in the chamber wall and stains the outside surface of the member.

REFERENCES:
patent: 602129 (1898-04-01), Fisher
patent: 1553188 (1925-09-01), Sauton
patent: 2610879 (1952-09-01), Pope
patent: 3290080 (1966-12-01), Dawson
patent: 3367701 (1968-02-01), Wenk, Jr.
patent: 3463532 (1969-08-01), Chidley et al.
patent: 3881759 (1975-05-01), Fuehrer
patent: 3991594 (1976-11-01), Goenner
patent: 4093288 (1978-06-01), Suzuki
patent: 4106802 (1978-08-01), Lozio
"Security Seal Handbook", Dec. 1978 by David Poli, SAND 78-0400.

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