Container closure with tamper evident band

Details Container closure with tamper evident band Container closure with tamper evident band

1994-02-25

1994-10-18

Shoap, Allan N.

Bottles and jars

Closures

Frangible member or portion

B65D 4134

Patent

active

053560205

ABSTRACT:
The present invention provides a container closure molded from plastics material and comprising a crown, an annular skirt depending from the crown and formed with a screw threaded on its internal surface and a tamper evident ring connected to the end of the skirt remote from the crown by a series of frangible bridges extending across an axial gap between the ring and the skirt, or by a band of the material with a circumferential line of weakening therein. The ring has spaced along its inner surface a plurality of radially inwardly projecting protrusions each having an abutment surface generally facing the crown, but having a slight inclination away from the crown in the radially inward direction, and an inwardly facing cam surface inclined away from the crown. The inwardly facing cam surface has a compound curve tapering downwardly from the crown and towards the screwing-on direction, thereby to assist capping.

REFERENCES:
patent: 4526282 (1985-07-01), Dutt et al.
patent: 4541536 (1985-09-01), Davis et al.
patent: 4715506 (1987-12-01), McLaren
patent: 4784280 (1988-11-01), Breuer et al.
patent: 4899898 (1990-02-01), Thompson
patent: 5131550 (1992-07-01), Thompson

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