One-piece plastics closure

Details One-piece plastics closure One-piece plastics closure

1984-10-22

1986-07-08

Norton, Donald F.

Bottles and jars

Closures

Receptacle interior communicable with exterior with closure...

215344, 215DIG1, B65D 5300

Patent

active

045988358

ABSTRACT:
A one-piece plastics closure for a carbonated beverage bottle has a sealing ring (17) pivotally attached at the junction between its closure panel (10) and dependant skirt (11). The sealing ring is forked, having two annular and mutually divergent fins 20,21. The upper fin (20) is engaged by the free end of the container neck as the closure is fitted, and by pivotal movement of the sealing ring brings the lower fin (21) into sealing relation with the side surface of the container finish. The resilience of the closure material and the substantial deformation to which the sealing ring is subject thereafter maintain the effectiveness of the seal despite creep and backing-off of the closure which may occur.

REFERENCES:
patent: 3067900 (1962-12-01), Kessler
patent: 3901404 (1975-08-01), Feldman
patent: 4125201 (1978-11-01), Birch
patent: 4220250 (1980-09-01), Brownbill
patent: 4461392 (1984-07-01), Conti

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