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US 4,362,254 AGranted
Closure and container neck structure therefor
AssigneeThe Continental Group, Inc.
InventorsDonald J. Roth, Charles S. Kubis, John Walter
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AssigneeThe Continental Group, Inc.
InventorsDonald J. Roth, Charles S. Kubis, John Walter
Estimating the term…
This relates to a neck structure on a domed container end for receiving a thermoplastic material closure. It particularly relates to containers having very thin walls on the order of 6-9 mils and wherein the container is formed of a metal having a grain which generally defines a fold line. In order to avoid undue deformation of the lower part of the usual ring which receives the closure body, the domed end immediately adjacent an encircling ring is provided with an upstanding bead which is shock absorbent and functions resiliently to reinforce the lower part of the ring and to restore it to its original configuration after the body of the closure has been pressed through the ring. Further, the closure is provided with a depending skirt which is circumferentially aligned with the bead and slightly axially spaced therefrom so that when an undue load is placed on the closure, that load may be primarily transmitted, after initial deflection of the neck ring, to the domed end through the closure skirt and the bead. This abstract forms no part of the specification of this application and is not to be construed as limiting the claims of the application.
A neck and closure assembly for a container wherein said neck comprises:
A container neck for receiving a closure assembly, said container neck comprising a container member terminating in a container neck and a closure seated in said container neck in sealed relation, said container neck including a ring and an upstanding bead radially surrounding said ring and directly connected to said ring in a blunt axially inner juncture to form shock absorbing and reinforcing means controlling expansion of said ring and said blunt juncture during the application of a closure.
A neck structure for a container comprising a tubular neck member having a radially and axially inturned lip terminating in an inner edge, and an integral closure-supporting retaining ring connected to said inner edge and extending axially outwardly therefrom.
A method of assembling a closure of heat softenable plastic material having a sleeve portion with a neck structure of a thin wall metal container, said method comprising the steps of forming said neck structure with a plurality of interconnected nested elements in a load buffering assembly, heating said closure to soften the material of the closure, then forcibly axially impacting said sleeve portion into the innermost one of the nested elements in sealing engagement therewith, then cooling said closure to ambient temperature.
A three element crush resistant thin wall metal container neck structure comprising a radially outer tubular element, a radially intermediate tubular element and a radially inner tubular element, said elements being in radially adjacent relation, said outer and intermediate elements having a radially outer edge connecting juncture and said intermediate and inner elements having a radially inner edge connecting juncture, said elements being arranged in a manner for buffering predetermined loads imposed thereon.
Dependencies are inferred from the claim text.