Blind stitching apparatus and composite material manufacturing methods
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United States of America Patent
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Nov 3, 1998
Grant Date -
N/A
app pub date -
Sep 30, 1996
filing date -
Mar 31, 1994
priority date (Note) -
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Abstract
A composite component is made up by laying pre-forms one on top of the other and tacking the pre-forms together at spaced, discrete locations by blind stitches which tack an upper pre-form layer to the one beneath it, using a stitching head. The stitching head 16 includes a curved needle 18 reciprocally movable in one plane and a looper 30 reciprocally movable in a transverse plane. In use the looper catches the thread from the needle as it emerges from the material and draws it into a loop around the next entry point for the needle.
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