US 11,772,337 B2
Pultrusion systems that apply lengthwise curvature to composite parts
Andrew Klimovski, Melbourne (AU); Karlgren Ka-Tsun Lai, Doncaster East (AU); and Benjamin Stanislaw Zielinski, Melbourne (AU)
Assigned to The Boeing Company, Chicago, IL (US)
Filed by The Boeing Company, Chicago, IL (US)
Filed on Jun. 15, 2021, as Appl. No. 17/348,535.
Application 17/348,535 is a division of application No. 15/498,434, filed on Apr. 26, 2017, granted, now 11,065,830.
Prior Publication US 2021/0308965 A1, Oct. 7, 2021
Int. Cl. B29C 70/52 (2006.01); B29C 70/20 (2006.01); B29K 105/08 (2006.01); B29K 307/04 (2006.01); B29L 31/30 (2006.01); B29K 101/12 (2006.01)
CPC B29C 70/526 (2013.01) [B29C 70/20 (2013.01); B29C 70/52 (2013.01); B29C 70/527 (2013.01); B29C 70/528 (2013.01); B29K 2101/12 (2013.01); B29K 2105/08 (2013.01); B29K 2307/04 (2013.01); B29L 2031/3076 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
a heater that heats fiber reinforced material to a sticking point temperature of a constituent material of the fiber reinforced material;
a pultrusion die, downstream of the heater, having a channel that enforces a curvature along a length of the fiber reinforced material to form the fiber reinforced material into a preform for a gap filler;
a cooling chamber that places the fiber reinforced material into direct contact with a fluid; and
rollers that form a nip to pull the preform out of the pultrusion die, the nip having a cross-sectional shape of the channel.