Forming the end portions of fibre reinforced thermoplastic composite tubes
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United States of America Patent
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Aug 12, 2014
Grant Date -
Dec 1, 2011
app pub date -
Dec 17, 2009
filing date -
Dec 22, 2008
priority date (Note) -
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Abstract
A method and apparatus for forming at least one external annular flange (48 or 49) adjacent one end of a fiber reinforced thermoplastic tube (10) in which the tube (10) is mounted on a mandrel (12) and a first end portion of the tube is clamped in a collar (13) having at least one internal annular cavity (18 or 19) for forming a flange, a second end portion of the tube in the region (R1, R2) of the cavity is heated to soften the thermoplastic, and an axial load (L) is applied to the end of the tube by a piston (24) causing the softened tube to flow into the cavity (18, 19) in the collar (13) to form a flange on the tube.
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