Multi-ply woven article having stiffening elements between doubl

Details Multi-ply woven article having stiffening elements between doubl Multi-ply woven article having stiffening elements between doubl

1974-10-09

1976-06-29

Bell, James J.

Textiles: weaving

Fabrics

Special shape

139410, 428116, 428117, 428119, 428120, 428188, 428225, 428257, D03D 300

Patent

active

039659429

ABSTRACT:
A multi-ply woven article has stiffening elements positioned within pockets formed by double plies of the article to provide the article with substantial strength and rigidity. The double plies may comprise a generally parallel pair of rib plies which extend between the opposite faces of the article in generally zig zag fashion to form a plurality of intermediate rib portions, or a pair of generally parallel, spaced apart face plies forming each of the opposite faces of the article, or both. The various stiffening elements may comprise one or more layers of relatively stiff material. The various layers comprising each stiffening element may comprise unidirectional fibers or materials oriented relative to the woven article so as to impart maximum strength in selected directions. In a preferred method of making woven articles in accordance with the invention the multi-ply fabric is woven and the individual stiffening elements are made, after which the woven fabric is resin impregnated, the pockets thereof filled with the stiffening elements and open spaces in the fabric filled with mandrels. Thereafter the fabric is cured and the mandrels subsequently removed to form the finished article.

REFERENCES:
patent: 3090406 (1963-05-01), Koppelman et al.
patent: 3481427 (1969-12-01), Dobbs et al.
patent: 3538957 (1970-11-01), Rheaume
patent: 3575776 (1971-04-01), MacIntyre

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