Method of making graphite composite shafts

Details Method of making graphite composite shafts Method of making graphite composite shafts

1993-09-02

1995-01-24

Fiorilla, Christopher A.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

264316, 264320, 264334, B28B 730, B29C 3358

Patent

active

053840852

ABSTRACT:
An improved method of making a bent graphite shaft in which a mandrel is provided as the basic form for forming the shaft. The mandrel includes a flexible portion at the location of the desired bend in the shaft. Graphite composite material is applied to the mandrel and to the flexible portion thereof. The flexible portion is then bent into a configuration which provides the desired bend, and the flexible portion is held in this configuration while the graphite composite material is cured in situ on the mandrel to form a rigid, graphite shaft. The mandrel is then slid out of the shaft with the flexible portion of the mandrel being sufficiently flexible to allow the mandrel to pass out of the shaft without fracturing the shaft.

REFERENCES:
patent: 4158586 (1979-06-01), Usui
patent: 4567007 (1986-01-01), Harder
patent: 4746386 (1988-05-01), Sato et al.
Materials Handbook, 12th Ed. Brady et al., McGraw Hill, 1986, pp. 369-372.
Article entitled "Out of Autoclave Processing of Advanced Composites Vtilizing Silicone Elastomers", dated Apr. 18, 1991.

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