Carbon fiber spar and method of making

Details Carbon fiber spar and method of making Carbon fiber spar and method of making

1994-11-18

1996-02-13

Swinehart, Edwin L.

Ships

Spars

Masts and masting

114357, B63H 1500

Patent

active

054904722

ABSTRACT:
A spar is provided comprising an inner layer of fiber, an outer layer of fiber, a hollow between the inner and outer layers of fiber with the inner fiber layer forming a surface of the hollow such that it is integral in one piece with the spar. The spar preferably includes a cut through the outer fiber layer into the hollow to form a groove for attaching a sail. The invention also provides a method of making spars including the steps of forming a first layer, pressing the layer inwardly along a line to form a groove, applying a second layer over the first, and combining the layers together except along the line. The method preferably also includes the step of cutting through the second layer along the line into the groove.

REFERENCES:
patent: 3300355 (1967-01-01), Adams
patent: 4657615 (1987-04-01), Braun et al.
patent: 4700647 (1987-10-01), Pabsch
patent: 4964825 (1990-10-01), Paccoret et al.

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