Plastic bottle caps

Details Plastic bottle caps Plastic bottle caps

1986-08-07

1987-10-13

Norton, Donald F.

Bottles and jars

Closures

Frangible member or portion

215305, 215321, B65D 4148

Patent

active

046992863

ABSTRACT:
Plastic bottle caps of the snap-on type having tamper indicating means such as a tear band. The top wall of the tap overhangs its side wall and the overhanging lip is filleted at an angle of about 30.degree. to increase the difficulty of removing the cap by hand without visibly affecting the tamper indicating means. Also, the cap has interior interrupted beads for snapping over a shoulder of the bottle neck and has ribs in the interruptions for adjusting the magnitude of the snap-on and snap-off forces. The cap is molded on a core having grooves for forming the beads and ribs. The cap may have a non-resilient gasket and a dished top so that it can exert pressure on the gasket.

REFERENCES:
patent: 3142403 (1964-07-01), Fox
patent: 4166552 (1979-09-01), Faulstich
patent: 4438857 (1984-03-01), Bullock

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