Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1982-09-30
1984-11-13
Moon, Charlie T.
Metal working
Method of mechanical manufacture
Assembling or joining
29522R, 29526R, 411 53, 411 58, 411 59, 403297, B23P 1100
Patent
active
044817029
ABSTRACT:
An insert assembly includes a frustoconically shape cone nut (10), a cylindrical shell (20) and a bolt (36). The cone nut (10) has a longitudinal bore (12) which is tapped to accept the threads on the bolt. The shell (20) has projecting barbs (28) arranged in a helical pattern on the shell's outer surface. The assembly, comprising the bolt through the shell and threaded into the smaller diameter end of the nut cone, is driven into a bore in the work piece. The bolt is then rotated causing the cone nut to penetrate the shell resulting in radial expansion of the shell whereby the barbs become embedded in the work piece. A keying feature between the nut and the shell prevents nut rotation with the bolt.
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Donahue Bernard A.
Hamley James P.
Moon Charlie T.
The Boeing Company
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