Pipes and tubular conduits – With closures and plugs – Inflation stem type
Patent
1976-04-08
1976-12-14
Hall, George T.
Pipes and tubular conduits
With closures and plugs
Inflation stem type
138 96R, 220266, 220270, 220356, F16L 5510
Patent
active
039969665
ABSTRACT:
A disposable end closure for pipe and tube ends such as, for example, vehicle fuel filler openings. The disposable end closure includes a cylindrical portion for inserting axially into the open end of the pipe or tube. The cylindrical portion has an outside diameter slightly smaller than the inside diameter of the pipe or tube. At the axially outer end of the cylindrical portion is a first flange which extends radially outwardly from the cylindrical portion. The axially inner end of the cylindrical portion is closed. A second flange extends radially outwardly from the sidewall of the cylindrical portion and engages the inner wall of the pipe or tube axially inwardly from the end thereof. The closure for an automobile fuel filler neck is preferably molded of a resilient plastic material and a pair of parallel chordally extending tear lines are molded, scored, or otherwise formed in the axially inwardly facing surfaces of the first flange, the radially outwardly facing sidewall of the cylindrical portion and the axially inwardly facing wall of the closed lower end. The tear lines are substantially continuous across the first flange, cylindrical portion and closed inner end so that a region is defined between the tear lines, which region desirably extends transversely a substantial distance across the end closure. The region may be gripped by a tool near the outer periphery of the first flange and torn away from the end closure between the webs. The remaining portion of the end closure may then be deformed slightly for easy removal from the pipe or tube end.
REFERENCES:
patent: 3403812 (1968-10-01), Weber
patent: 3780773 (1973-12-01), Haugen
patent: 3948290 (1976-04-01), Arisland
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