Closure cap with self-opening means

Details Closure cap with self-opening means Closure cap with self-opening means

1975-05-21

1976-06-15

Norton, Donald F.

Bottles and jars

Closures

Frangible member or portion

215305, B65D 4112

Patent

active

039631419

ABSTRACT:
A self-opening closure cap for containers. The cap has a hole at its central portion and a self-opening means integrally formed with a seal placed under the cap and protruding therefrom through the hole. In one embodiment the self-opening means and seal are injection molded of polyethylene or polypropylene. When a pulling force is exerted on the self-opening means by a finger, the core of the seal will be punctured so that the contents are removable through the hole without using any mechanical opener and without removing the whole cap.

REFERENCES:
patent: 1612927 (1927-01-01), Kuhne
patent: 2135386 (1938-11-01), Crabbe
patent: 2974815 (1961-03-01), Driscoll
patent: 3278063 (1966-10-01), Kranzhoff
patent: 3379326 (1968-04-01), Andersen
patent: 3587897 (1971-06-01), Rohde

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