Plastic container closure with tamper evident properties

Details Plastic container closure with tamper evident properties Plastic container closure with tamper evident properties

1998-07-28

1999-09-28

Cronin, Stephen K.

Bottles and jars

Closures

Frangible member or portion

B65D 4134

Patent

active

059573155

ABSTRACT:
A plastic container closure having tamper evident properties of a type in which axial breakage means disposed in a tamper evident bottom portion is constituted from a slit continuously extending from the upper end of the tamper evident bottom portion substantially to its lower end. A first high strength bridging portion is disposed on one circumferential side of an upper end of the axial breakage means, while a second high strength bridging portion is disposed on the other circumferential side of the upper end of the axial breakage means, whereby when the container closure is mounted on a mouth-and-neck portion of a container, the tamper evident bottom portion is prevented from being enlarged at a site where its axial breakage means exists.

REFERENCES:
patent: 4488655 (1984-12-01), Itsubo et al.
patent: 4565295 (1986-01-01), Mori et al.
patent: 4744479 (1988-05-01), Schottli
patent: 5080246 (1992-01-01), Hayes
patent: 5289931 (1994-03-01), Doi
patent: 5673809 (1997-10-01), Ohmi et al.

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