Threaded plastic bottle cap

Details Threaded plastic bottle cap Threaded plastic bottle cap

1982-06-22

1984-07-24

Norton, Donald F.

Bottles and jars

Closures

With pressure-responsive seal

215344, 215DIG1, B65D 5300

Patent

active

044613920

ABSTRACT:
Imrpoved plastic bottle cap having a primary annular sealing flange depending from the top wall of the cap for engagement with the top wall surface of the bottle neck of the bottle. The flange is flexible and wide enough to cover a major portion of the top wall surface so as to thereby accommodate surface irregularities. The cap also has a secondary annular sealing flange extending radially downwardly from the top wall of the cap for engagement with the outer side wall of the bottle neck.

REFERENCES:
patent: 3203571 (1965-08-01), Plunkett
patent: 3568871 (1971-03-01), Livingstone
patent: 4061240 (1977-12-01), Brownbill
patent: 4143785 (1979-03-01), Ferrell

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