Bottles and jars – Closures – Frangible member or portion
Patent
1979-04-30
1980-05-27
Norton, Donald F.
Bottles and jars
Closures
Frangible member or portion
215249, 220277, B65D 4132
Patent
active
042046041
ABSTRACT:
An improvement in a closure system for containers in which a cap member sealed at its base to an annular flange about the neck of the container is removeable by a cutting ring. The cap includes an upwardly projecting brim at the base separated from the side wall of the cap to provide an annular groove. The groove has at least one tapered recess. The cutting ring which can be positioned around the side wall of the cap has at least one depending tab with an inwardly directed sharpened projection. Normally, the tab rests in the recess of the groove. Upon rotation of the cutting ring, the tab is forced inwardly causing the sharpened projection to sever the side wall of the closure.
REFERENCES:
patent: 2977014 (1961-03-01), Kock
patent: 3025989 (1962-03-01), Williams
patent: 3266658 (1966-08-01), Meissner
patent: 3784045 (1974-01-01), Komendowski
patent: 3950917 (1976-04-01), Choksi et al.
Morin Marius J.
Nichols Colin J.
Prouty Myron R.
Allen Robert E.
Bradley Bertram
Cutter Laboratories, Inc.
Giblin James A.
Norton Donald F.
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