Ridged container closure

Details Ridged container closure Ridged container closure

1987-06-02

1988-10-25

Culver, Horace M.

Bottles and jars

Closures

Frangible member or portion

215321, B65D 4148

Patent

active

047797487

ABSTRACT:
A plastic container lid which has a small ridge protruding from the outer periphery of the lid, at the top corner of the lid. The ridge provides a uniform taper in the outside diameter of the lid, enabling containers to be capped at high speeds by a method that utilizes a spinning rod feed mechanism. The ridged lid is formed by a novel method, utilizing a one-piece mold cavity, fitted with a one piece mold insert. Also, disclosed is a method of fabricating the one-piece mold cavity.

REFERENCES:
patent: 2953272 (1960-09-01), Mumford et al.
patent: 3172559 (1965-03-01), Thompson
patent: 3871544 (1975-03-01), Peyser
patent: 4305524 (1981-12-01), McLaren et al.
patent: 4407426 (1983-10-01), McLaren et al.
patent: 4438857 (1984-03-01), Bullock, III

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