Carbon fiber tow termination and method for making
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United States of America Patent
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Feb 16, 2010
Grant Date -
Jul 31, 2008
app pub date -
Jan 31, 2008
filing date -
Jan 31, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Discrete portions of a carbon fiber tow, selected from a group of tows, ranging in number of fibers from about 1,000 to about 150,000, and terminated by discrete contact portions of a metal conductor within a non-metallic termination assembly formed by the joinder of a cradle and a cap defining opposing parallel clamping surfaces receiving the tow portions and the contact portions in crossing engagement therebetween. Opposing energy directors on the cradle and cap serve as temporary guide rails for positioning the carbon fiber portions before and during assembly. Meltdown of the energy directors during a pressure and ultrasonic welding cycle enable self-leveling of the carbon fiber portions whereby uniform distribution of carbon fiber over the entire cross section of each of the carbon fiber portions of the assembly may be attained. The clamping surfaces remain intact after welding and retain clamping integrity.
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