Plastic closure with mechanical pilfer band

Details Plastic closure with mechanical pilfer band Plastic closure with mechanical pilfer band

1981-07-24

1983-12-06

Norton, Donald F.

Bottles and jars

Closures

Frangible member or portion

B65D 4134

Patent

active

044188285

ABSTRACT:
A novel plastic closure is disclosed having a self-engaging locking pilfer band arrangement for engagement with a locking ring on the neck of the container to which the closure is applied. The pilfer band includes a plurality of circumferentially spaced, inwardly extending relatively thin flexible wings or fingers which move to an out-of-the-way position during application of the closure to the container. When the closure is in place on the container, the wings are disposed such that they engage the surface of the locking ring on the container neck when the closure is moved for removal from the container. During removal, each wing engages the locking ring so that resistance to removal of the closure is created in the pilfer band, whereby areas of reduced strength fracture clearly indicating partial or complete removal of the closure from the container.

REFERENCES:
patent: 2423582 (1947-07-01), Coleman
patent: 3249247 (1966-05-01), Babiol
patent: 3441161 (1969-04-01), Van Baarn
patent: 3504818 (1970-04-01), Crisci et al.
patent: 3929246 (1975-12-01), Leitz
patent: 4033472 (1977-07-01), Aichinger
patent: 4196818 (1980-04-01), Brownbill
patent: 4299328 (1981-11-01), Ochs et al.
patent: 4305516 (1981-12-01), Perne et al.
patent: 4305517 (1981-12-01), Dennis
patent: 4322009 (1982-03-01), Mumford

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