B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
18/123, 154/82
B29D 99/00 (2010.01)
Patent
CA 1230714
ABSTRACT OF THE DISCLOSURE A method of forming an energy absorbing beam comprises providing a fixture positioning first and second end fittings, with pins extending between the end fittings defining a peripheral curve circumscribing the pins and the end fittings, and sequentially winding a tow of resin impregnated fibers in a sinuous pattern about the pins commencing with a centrally positioned anchor pin, then extending to an adjacent pin, passing radially inside of the pin and wrapping the tow about the pin thereby reversing direction of the tow toward the anchor pin, then winding the tow along the peripheral curve to the next unwrapped pin, passing radially inside of the pin and wrapping the tow about the pin thereby reversing direction of the tow toward the anchor pin, then winding the tow along the peripheral curve to the next adjacent unwrapped pin, passing radically inside of the pin and wrapping the tow about the pin thereby reversing the direction of the tow toward the anchor pin, and continuing this pattern until all pins and the end fittings have been wrapped with the tow. The tow is then circumferentially wrapped alternately around the end fittings, thereby enclosing the prior wound fiber plies within the circumscribing fibers, and the resulting plies of impregnated fibers are placed in a mold and the resin is cured.
440063
G. Ronald Bell & Associates
Kelsey Hayes Company
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