Break-away container closure

Details Break-away container closure Break-away container closure

1986-04-17

1987-10-06

Norton, Donald F.

Bottles and jars

Closures

Frangible member or portion

B65D 4134

Patent

active

046977147

ABSTRACT:
Break-away closures are formed by an injection molding process with a closure part in interference path with a forming core for interference in use with a counterpart surface of a container neck. The process and apparatus disclosed permits stripping of the formed closure from the core by selectively creating free encircling space about the interference closure part for expansion thereof during stripping. The closure has detent surface molded therein which assists the stripping operation and the process and apparatus provide for the application of stripping forces at spaced locations simultaneously to permit stripping of the closure in part without axial loading thereof.

REFERENCES:
patent: 2162711 (1939-06-01), Hamberger
patent: 2162712 (1939-06-01), Hamberger
patent: 2162752 (1939-06-01), Schauer
patent: 2162754 (1939-06-01), Schauer
patent: 3673761 (1972-07-01), Leitz
patent: 3788509 (1974-01-01), Keeler
patent: 3812991 (1974-05-01), Wurl
patent: 3924769 (1975-12-01), Fillmore
patent: 3929246 (1975-12-01), Leitz
patent: 3980195 (1976-09-01), Fillmore
patent: 4033472 (1977-07-01), Aichinger
patent: 4126240 (1978-11-01), Brach
patent: 4526282 (1985-07-01), Dutt et al.

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