Composite mandrel

Details Composite mandrel Composite mandrel

2007-03-30

2010-10-19

Neckel, Alexa D (Department: 1795)

Static molds

Including coating or adherent layer

C156S307100, C425S322000, C264S103000, C264S113000, C264S136000, C264S137000

Reexamination Certificate

active

07815160

ABSTRACT:
A mandrel for use as a substrate in the manufacture of woven or braided articles may comprise an inner core of foam; at least a first intermediate layer of carbon fiber-reinforced resin; and an outer layer of glass fiber-reinforced resin. The foam core may comprise a high density, closed cell polyurethane foam that is formed of a desired size and shape. The fibers in the intermediate layer and outer layer may be, for example, chopped fibers, continuous longitudinally aligned fibers, circumferentially wound fibers, obliquely aligned fibers, or the fibers may have a woven or braided pattern. Multiple mandrel may be joined together to form complex mandrel shapes such as curves, ovals, and circles.

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Kumar, Satish and V.B. Gupta. “Manufactured fibres for high performance, industrial and non-conventional applications.” In Manufactured Fibre Technology. Chapman & Hall: New York, 1997. p. 546.

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