Bottles and jars – Closures – Receptacle interior communicable with exterior with closure...
Patent
1981-06-08
1984-01-24
Norton, Donald F.
Bottles and jars
Closures
Receptacle interior communicable with exterior with closure...
220366, B65D 5116
Patent
active
044271263
ABSTRACT:
A thermoplastic closure suitable for fitment to a threaded container neck is disclosed. The closure has at least one venting groove in the sidewall traversing the closure thread. A rigidifying means is provided at the point of traverse of the venting groove and the closure thread. This rigidifying means has a perpendicular height measured from the sidewall less than the perpendicular height of the closure thread also measured from the sidewall. The rigidifying means provides hoop strength to the closure sidewall.
REFERENCES:
patent: 1739659 (1929-12-01), Spahn
patent: 3888347 (1975-06-01), Kramer
patent: 4007848 (1976-02-01), Snyder
patent: 4007851 (1977-02-01), Walker
patent: 4206852 (1980-06-01), Dunn et al.
Ethyl Products Company
Johnson Donald L.
Norton Donald F.
Sieberth John F.
Spielman, Jr. Edgar E.
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