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US 4,310,102 AGranted
Closure for pressure container
AssigneeThe Continental Group, Inc.
InventorJohn Walter
Life of this patent
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AssigneeThe Continental Group, Inc.
InventorJohn Walter
Estimating the term…
A removable closure for a pressure container having an opening with a peripheral bead into which there is inserted a threaded neck member, the neck member being formed of a resilient plastic material adapted to expand and contract and having an interlocking engagement with the bead. The neck is provided with a radially extending handle portion by means of which the container is adapted to be carried and which also serves to prevent rotation of the neck member upon the application and threading of a cap to the neck member, the cap having a plug portion which enters into the opening in the neck member and being tapered wedges into the neck member and spreads the portion of the neck member which is in radial alignment with the bead portion, thus tightly forcing such portion against the bead to provide a high pressure seal. The plug portion is provided with pressure relief grooves at its inner end extending axially of the plug such that as the cap is being unscrewed from the neck portion, the grooves are positioned to communicate the interior of the container with a space between the interior of the neck and the plug outwardly of the interlocking portion so that the excess pressure can bleed off to the atmosphere about the threads. The invention also comprises novel pilfer-proof mechanism which has to be broken away from the cap in order to unscrew the cap and therefore readily is indicative of tampering.
A closure for a pour opening in a transaxially extending wall of a container comprising:
A closure for a pour opening in a wall of a container comprising:
A closure for a pour opening in a wall of a container comprising:
A closure for an opening in a wall of a container comprising a flexible plastic neck member having a tapered inner end portion insertable through said opening and at said end portion having inner and outer radial flange portions defining a groove therebetween for receiving a marginal portion of the wall circumjacent said opening, said neck member having a bore of predetermined diameter beyond said inner end portion and being constricted at said inner end portion, and the bore surface of said constricted portion thereof and the exterior surface of the end portion defining a progressively tapered section adaptable for tight insertion of a closure plug therein and expansion of said inner flange portion and deflection radially and axially thereof with respect to said neck member.
In a closure for a container having a threaded neck and a pour opening therein a cap having a top with an axially extending plug insertable into said opening and having a threaded skirt for threaded engagement with the threads on the neck, said opening and said plug having engaging surface means, and venting means included in at least one of said surface means formed and arranged to vent pressurized gases from the container upon said cap being less than entirely unthreaded from said neck to prevent the cap from being blown off.
Dependencies are inferred from the claim text.