Ribbed tubular structure and method of making same

Details Ribbed tubular structure and method of making same Ribbed tubular structure and method of making same

F - Mech Eng,Light,Heat,Weapons

16

L

189/62, 154/8.08

F16L 9/14 (2006.01)

Patent

CA 1063045

ABSTRACT OF THE DISCLOSURE A pipe mate of fiberglass or the like includes a helical reinforcing member bonded to its outer surface substantially over its length with adjacent convolutions spaced with respect to each other. The reinforcing member or rib includes a filament-wound composite of a series of continuous resin impregnated glass filaments arranged in a bundle and surrounded by a helical fiber having spaced adjacent convolutions. An alternative construction further includes a core of paper or plastic or metal within the bundle to increase the rib height. An auxiliary bundle forming apparatus is employed with a filament winding machine so that the same winding machine and additional lengths of continuous glass fibers drawn from a common storage station may be utilized to form both the fiberglass pipe and the reinforcing rib. A spiral guide may also be used with the auxiliary bundle forming apparatus and the filament winding machine to add an inexpensive elongated core to the bundle forming a reinforcing rib of increased height.

271664

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