Tamper-evident closure and method of manufacture

Details Tamper-evident closure and method of manufacture Tamper-evident closure and method of manufacture

1984-04-13

1985-04-16

Pollard, Steven M.

Bottles and jars

Closures

Frangible member or portion

B65D 4134

Patent

active

045110549

ABSTRACT:
A method of manufacturing a tamper-evident closure having a detachable annular tamper-indicating portion includes a step of testing the connection between the detachable portion and the remainder of the closure. The testing may comprise either use of optical detection apparatus or use of a deflection measuring system which applies radial pressure to the detachable portion. A tamper-evident closure having a detachable annular tamper-indicating portion includes gaging means to cooperate with optical detection apparatus to enable detection of closures having unacceptable tolerances.

REFERENCES:
patent: 3673761 (1972-07-01), Leitz
patent: 3929246 (1975-12-01), Leitz
patent: 4147268 (1979-04-01), Patel et al.
patent: 4205755 (1980-06-01), de Wijn
patent: 4217989 (1980-08-01), George
patent: 4322009 (1982-03-01), Mumford
patent: 4458821 (1984-06-01), Ostrowsky

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