Blow-molded pressure tank with spin-welded connector
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United States of America Patent
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-
Sep 21, 2004
Grant Date -
N/A
app pub date -
Feb 4, 1998
filing date -
Feb 4, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pressurized vessel, such as a tank liner, is formed of a thermoplastic injection-molded connector or insert and a thermoplastic blow-molded vessel body. A noncylindrical skirt of the connector having a substantial surface area is spin-welded to a mating interface formed on the outer surface of the vessel body adjacent an orifice into which the insert is received. In a preferred embodiment, a sacrificed portion of an upstanding orifice sidewall forms a molten weld bead, which flows in a channel to fuse the skirt to the mating interface.
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