Closure cap

Details Closure cap Closure cap

1975-09-18

1976-08-17

Hall, George T.

Receptacles

Closures

With condition responsive vent or valve

220DIG32, B65D 5116

Patent

active

039749363

ABSTRACT:
A closure cap for containers or for use as a pipe socket closure including a rigid partition having a pair of valves acting in opposite directions for automatically compensating for pressure inequalities on either side of the partition. The valves include additional means for providing improved sealing support on the partition under the action of compression springs.

REFERENCES:
patent: 3809282 (1974-05-01), Blau et al.
patent: 3820680 (1974-06-01), Friend

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