Container closure

Details Container closure Container closure

1987-09-15

1988-06-28

Marcus, Stephen

Bottles and jars

Closures

Frangible member or portion

B65D 4134

Patent

active

047533609

ABSTRACT:
A closure for a container, includes a tamper-indicating band (11) with internal protrusions (22) for engagement under a bead on a container to prevent removal of the closure from the container after application thereto without breaking the tamper-indicating band (11). Each internal protrusion on the tamper-indicating band (11) comprises an elongated, inward projection (22) extending in a general direction around the band (11) and having a longitudinal axis inclined to the circumferential direction of the band (11) at a small angle so that each projection (22) has a helical configuration in relation to the tamper-indicating band (11). The leading end (29) of each projection (22) as determined by the action of screwing the closure onto a container, merges smoothly with the immediately preceding part (23) of the tamper-indicating band (11) and increases gradually and smoothly in height in a rearward direction. Each projection (22) has a downward extension (24) with a smooth, outwardly and downwardly inclined surface (25), extending to, or close to, the lower rim ( 19) of the tamper-indicating band (11).

REFERENCES:
patent: 4147268 (1979-04-01), Patel et al.
patent: 4156490 (1979-05-01), Peraboni
patent: 4305516 (1981-12-01), Perne et al.
patent: 4380299 (1983-04-01), Llera
patent: 4530438 (1985-07-01), McDevitt
patent: 4555039 (1985-11-01), Conti

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