Bottles and jars – Closures – Frangible member or portion
Patent
1982-07-13
1985-11-26
Norton, Donald F.
Bottles and jars
Closures
Frangible member or portion
B65D 4134
Patent
active
045550395
ABSTRACT:
A molded plastic pilfer-proof closure constructed to permit removal from the internal molding die on which it is formed without damage to the closure. The closure includes a threaded skirt portion extending downwardly from the top wall of the closure and a pilfer-proof ring member attached to the lower end of the skirt. The ring includes an inwardly directed protrusion which is connected to the skirt by frangible members. The frangible members are located in axial alignment with the skirt and ring portions of the closure so that during removal of the closure from the internal mold member on which it is formed by a pushing action, compressive forces are created through the frangible member to limit bending and prevent breaking.
REFERENCES:
patent: 3929246 (1975-12-01), Leitz
patent: 4147268 (1979-04-01), Patel et al.
patent: 4196818 (1980-04-01), Brownbill
patent: 4241841 (1980-12-01), Boller
patent: 4299328 (1981-11-01), Ochs et al.
patent: 4322012 (1982-03-01), Conti
patent: 4343408 (1982-08-01), Csaszar
patent: 4346811 (1982-08-01), Hilaire
patent: 4461390 (1984-07-01), Csaszar
American Safety Closure Corp.
Norton Donald F.
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