Composite threaded collar

Details Composite threaded collar Composite threaded collar

1990-01-30

1992-01-28

Wilson, Neill R.

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

Torque responsive nut or bolt driving connection

Frangible connection

411427, 411908, 10 86R, F16B 3100, B21D 5324

Patent

active

050838881

ABSTRACT:
A composite threaded collar is fabricated from a panel consisting of multiple layers of fiber reinforced tape, bonded together to form a rigid composite structure. The tape comprises a plurality of longitudinally extending continuous fibers that are joined together by a suitable bonding agent. The stack of properly oriented tape layers is heated while a compressive load is applied, followed by cooling. The rigid panel thus formed is then cut, tapped and machined to form the desired configuration of the collar. A twist off driving portion of the collar will shear between tape layers at an annular notch at a predetermined torque.

REFERENCES:
patent: 2901455 (1959-08-01), Jurras
patent: 2943967 (1960-07-01), Simon
patent: 2949054 (1960-08-01), White
patent: 3061888 (1962-11-01), Wadham
patent: 3495494 (1970-02-01), Scott
patent: 3978761 (1976-09-01), Sosinski
patent: 4326825 (1982-04-01), Volkmann et al.
patent: 4576847 (1986-03-01), Tajima
patent: 4623290 (1986-11-01), Kikuzawa et al.
patent: 4717302 (1988-01-01), Adams et al.
patent: 4909690 (1990-03-01), Gapp et al.

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