Composite fastener and method of manufacture

Details Composite fastener and method of manufacture Composite fastener and method of manufacture

1987-07-15

1989-09-05

Wilson, Neill R.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Externally threaded fastener element, e.g., bolt, screw, etc.

Thread or shank structure

411504, 411901, 411908, F16B 1906, F16B 3504

Patent

active

048633305

ABSTRACT:
An essentially cylindrical, light weight, composite fastener formed of an interior cylindrical core member, a cone-shaped molded insert plug member in the first or head end of the core, and an exterior cup-shaped overwrap member. Threads are formed at the second or threaded end of the fastener. All of the components are fabricated of an organic resin material with high-modulus fibers embedded therein. The fibers of the exterior member are long and continuous while the fibers of the other members are short and chopped. All the fibers are essentially parallel with the axis of the fastener. The resin material is preferably polyetheretherketone and the fibers are preferably graphite. Also disclosed is the method of manufacturing the above described fastener.

REFERENCES:
patent: 4478544 (1984-10-01), Strand
patent: 4659268 (1987-04-01), Del Mundo et al.
patent: 4687394 (1987-08-01), Berecz
patent: 4687395 (1987-08-01), Berecz
patent: 4687396 (1987-08-01), Berecz
patent: 4687397 (1987-08-01), Berecz
patent: 4687398 (1987-08-01), Berecz
patent: 4718801 (1988-01-01), Berecz

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