Carbon-carbon fasteners, bolt type

Details Carbon-carbon fasteners, bolt type Carbon-carbon fasteners, bolt type

1990-05-25

1990-12-04

Wilson, Neill R.

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

Having separate expander means

Fluent pressure actuated

411 82, 411361, 411901, 411908, 295221, 295251, F16B 1304, F16B 3902

Patent

active

049750062

ABSTRACT:
The fastening together of structural elements formed from carbon-carbon is accomplished by a fastener constructed from 2-D or 3-D carbon-carbon in the form of a high angle helical threads on one end and a countersunk head with a carbon-carbon central insert on the other end with the threaded end inserted through the carbon-carbon structural elements to be joined. A metal is painted on the threads and the shank on the fastener. A collar formed from carbon-carbon is fitted over the course threaded end of the fastener with the distal end of the threads extending therefrom. While passing a heating current through the fastener, the head and the collar of the fastener are forced together. The fastener is heated to an elevated temperature in the presence of an Oxygen gas cover which causes the powered metal to expand up to 100% binding the fastener to the carbon-carbon components, collar and insert.

REFERENCES:
patent: 4687394 (1987-08-01), Berecz
patent: 4687395 (1987-08-01), Berecz et al.
patent: 4687397 (1987-08-01), Berecz
patent: 4687398 (1987-08-01), Berecz
patent: 4863330 (1989-09-01), Olez et al.

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