Bottles and jars – Closures – Frangible member or portion
Patent
1978-03-13
1979-09-04
Norton, Donald F.
Bottles and jars
Closures
Frangible member or portion
215 31, 215320, 215321, B65D 4148
Patent
active
041665520
ABSTRACT:
A blow molded or injection molded plastic container has a neck formed with a substantially horizontal flat top, an internal substantially vertical first sealing surface, a groove, a very smooth second sealing surface of less diameter than the first sealing surface and a lower groove and then a vertical stretch which merges into a breast which widens out to the full size of the container, an external first vertical surface, a horizontal inwardly extending soulder, an indented second vertical surface of lesser diameter than the first vertical surface and an external bead, and a third vertical surface at about the level of the vertical stretch. The second sealing surface has an "injection finish" obtained by use of a blow pin in the mold. The cap has upper and lower internal beads (which seat under the shoulder and external bead of the neck) interrupted in a plurality of gaps, permitting stretching of the cap to seat on the neck. The top disc has a flexible peripheral flange which may be gripped to lift the cap when the bottom of the skirt is torn off.
REFERENCES:
patent: 3019933 (1962-02-01), Gould
patent: 3263724 (1966-08-01), Mojonnier
patent: 3338446 (1967-08-01), Faulstich
patent: 3707240 (1972-12-01), Wilson
patent: 3927784 (1975-12-01), Cochrane
patent: 3940004 (1976-02-01), Faulstich
patent: 3946891 (1976-03-01), Picoy
patent: 3991904 (1976-11-01), Davis
Caplan Julian
Norton Donald F.
Three Sisters Ranch Enterprises
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