Nut

Details Nut Nut

1991-03-05

1992-09-22

Lindsey, Rodney M.

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

Having separate expander means

Frangible member

411 49, 411 51, F16B 1304

Patent

active

051492350

ABSTRACT:
A nut fastener device for a blind hole anchor (FIG. 2) has the nut 14 made frusto-conical with the smallest diameter knurled at 30 and with the largest diameter provided with relieved and back tapered flanks 20. The nut is made integral with a sleeve 10 having flange 12 and a further knurled zone 32, and a sheer zone 16 between the sleeve and nut. During the installation the nut is pulled into the sleeve to expand the sleeve and deform it to the cross sectional shape of the nut so as to provide an angular fix. The sleeve is effectively fixed to the sheet material by the flange on the one side and the deformation of the sleeve on the other side of the sheet. The knurled bands which become axially aligned increase the angular hold of the device in the sheet and of the nut in the sleeve.

REFERENCES:
patent: 1996128 (1935-04-01), Thomson
patent: 2120577 (1938-06-01), Schulte
patent: 3279303 (1966-10-01), Shackelford et al.
patent: 4483649 (1984-11-01), Ollis

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