Signals and indicators – Indicators
Patent
1982-08-13
1985-03-19
Frankfort, Charles
Signals and indicators
Indicators
116215, 206497, B65D 8502, B65D 9048
Patent
active
045052182
ABSTRACT:
There is disclosed a tamper-indicating seal that permits in the field inspection and detection of tampering. Said seal comprises a shrinkable tube having a visible pattern of markings which is shrunk over the item to be sealed, and a second transparent tube, having a second visible marking pattern, which is shrunk over the item and the first tube. The relationship between the first and second set of markings produces a pattern so that the seal may not be removed without detection.
REFERENCES:
patent: 1821140 (1931-09-01), Carroll
patent: 2121041 (1938-06-01), Morgan
patent: 2246001 (1941-06-01), Powers
patent: 2418436 (1947-04-01), Talbot
patent: 2939597 (1960-06-01), Greene
patent: 4005777 (1977-02-01), Marantz
patent: 4184148 (1980-01-01), Smagala-Romanoff
Degen Michael F.
Fiarman Sidney
Peters Henry F.
Corr Denis E.
Frankfort Charles
Gottlieb Paul A.
Hightower Judson R.
Myles Vale P.
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