Pressure vessel prestressing technique
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United States of America Patent
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-
Aug 15, 2006
Grant Date -
Aug 26, 2004
app pub date -
Feb 20, 2003
filing date -
Feb 20, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method of making a filament wound pressure vessel. A thermoplastic liner is filament wound with a commingled roving containing thermoplastic and reinforcing filaments. The wound tank is partially filled with a cooling liquid and the wound tank is heated to a temperature which is sufficient to vaporize a portion of the liquid to pressurize the liner at a preselected set pressure and sufficient to fuse the thermoplastic matrix, but insufficient to significantly soften the liner.
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