Metal bolt with a composite core for enhancement

Details Metal bolt with a composite core for enhancement Metal bolt with a composite core for enhancement

1992-10-07

1994-03-08

Cuomo, Peter M.

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

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

Thread or shank structure

411901, 411908, F16B 3504

Patent

active

052922154

ABSTRACT:
The improved metal matrix bolt has a metal shell having the bolt head, shank and threads thereon. The shell has a longitudinal space therein wherein a composite core of fibers is bonded. The fibers are divided into two groups: a longitudinal group and a spiral group. The spiral group wraps clockwise about the longitudinal group and is inclined at an angle of about 30.degree. to 45.degree. degrees from the axis of the bolt. The fibers are bonded within the space to the interior surface of the shell whereby when the bolt is torqued, the bolt has increased tensile strength and reduced thermal axial growth.

REFERENCES:
patent: 2510693 (1950-06-01), Green
patent: 2949054 (1960-08-01), White
patent: 4063838 (1977-12-01), Michael
patent: 4620401 (1986-11-01), L'Esperance
patent: 4623290 (1986-11-01), Kikuzawa
patent: 4717302 (1988-01-01), Adams et al.
patent: 4718801 (1988-01-01), Berecz
patent: 4824314 (1989-04-01), Stencel
patent: 4863330 (1989-09-01), Olez
patent: 5127783 (1992-07-01), Moghe
patent: 5152650 (1992-10-01), Kitagawa

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