Self sealing cap for a collapsible tube

Details Self sealing cap for a collapsible tube Self sealing cap for a collapsible tube

1975-12-23

1977-06-28

Tollberg, Stanley H.

Dispensing

Outlet element operated by pressure of contents

Axially slidable tube, sleeve, or apertured cap

B65D 2540

Patent

active

040320510

ABSTRACT:
A threaded dispensing cap fits over a delivery opening in a collapsible tube. The dispensing cap has a dispensing hole which is sealed by a bellows. In response to pressure being applied to the tube, the bellows expands and removes the seal whereby the contents of the tube pass through the hole.

REFERENCES:
patent: 2185323 (1940-01-01), Arnold
patent: 2605026 (1952-07-01), Wagner
patent: 2913152 (1959-11-01), Vidaver
patent: 2925935 (1960-02-01), Nomura
patent: 3439846 (1969-04-01), Evras
patent: 3734350 (1973-05-01), Waterman et al.

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