Bottle cap with means to effect seal with irregular bottle ends

Details Bottle cap with means to effect seal with irregular bottle ends Bottle cap with means to effect seal with irregular bottle ends

1975-03-05

1976-06-01

Norton, Donald F.

Bottles and jars

Closures

Cap type

215 31, 215342, 215347, B65D 4104

Patent

active

039602885

ABSTRACT:
A bottle cap made of Teflon and the like has a relatively thin end closure portion for engagement with a bottle end and an annular back-up flange is spaced axially of a peripheral marginal portion of the closure portion, and a resilient insert is disposed back-up the backflange and the marginal portion of the closure portion, whereby the closure portion is resiliently yieldable to effect a tight seal even with irregularly shaped bottle ends.

REFERENCES:
patent: 860338 (1907-07-01), Shearman
patent: 3272369 (1966-09-01), Grimsley
patent: 3326401 (1967-06-01), DeLong
patent: 3421648 (1969-01-01), Giessler
patent: 3565274 (1971-02-01), Davidson

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