Bottles and jars – Closures – Frangible member or portion
Patent
1991-10-08
1993-05-25
Shoap, Allan N.
Bottles and jars
Closures
Frangible member or portion
215307, 215318, 215320, 215329, 215354, B65D 3900
Patent
active
052132242
ABSTRACT:
A tamper-evident, snap-on, screw-off closure is used with a specially shaped container neck. The neck has double lead external threads and, below the threads, a conical wall having external ratchet teeth. The closure has an upper skirt having internal threads mating with the neck threads. A conical lower skirt is connected to the upper skirt by a plurality of frangible bridges. The lower skirt has internal ratchet teeth to mate with the neck ratchet teeth. The cap skirt threads are double pitch and slightly over 360.degree. in length. When the cap is applied to the neck it snaps on in two stages. The lower skirt has a tear tab which, when pulled, fractures the lower skirt on a vertical line. Continued pulling on the tab sequentially fractures the bridges.
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Caplan Julian
Cronin Stephen
Portola Packaging, Inc.
Shoap Allan N.
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