End boss and composite pressure vessel
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United States of America Patent
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Nov 1, 2011
Grant Date -
Jul 22, 2010
app pub date -
Jun 13, 2008
filing date -
Jun 14, 2007
priority date (Note) -
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Abstract
A composite pressure vessel comprised of an inner fluid tight liner and an outer reinforced polymer layer. An end boss comprising a short pipe section arranged through an opening of the vessel and extending to a lower end with an outwardly extending flange on the pipe section arranged between the outer layer and the inner liner, and a lid arranged at an upper end of the pipe section. The inner liner extends upwards through the opening of the pipe section to the lid with at least one gas tight seal interfacing against the inner liner. A pre-tensioning device is arranged on the outside of the inner liner, in a groove nearest to the lid and pipe section, around the upper end of the pipe section, which, regardless of the pressure in the vessel, presses the inner liner against the at least one gas tight seal.
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