Pressure venting closure

Details Pressure venting closure Pressure venting closure

1989-09-01

1991-02-19

Marcus, Stephen

Bottles and jars

Closures

With pressure-responsive valve

215276, 220366, B65D 5116

Patent

active

049935720

ABSTRACT:
A composite closure for a container vents internal gas pressure in excess of a pre-established maximum. An insert disk fits inside an overhanging top lip of the closure. The undersurface of the top lip is recessed to present a chamber into which excess gas pressure beneath the cover can deflect the disk and thereby provide a vent under the disk. A stop on a small area of the undersurface of the top lip positively abuts the disk to prevent blocking the chamber if the closure is overtightened.

REFERENCES:
patent: 2032931 (1936-03-01), Gibbs
patent: 2270729 (1942-01-01), Geddes
patent: 2449014 (1948-09-01), Shaffer
patent: 3114467 (1963-12-01), Montgomery
patent: 4093094 (1978-06-01), Smalley et al.
patent: 4880127 (1989-11-01), Doi

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