Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Member preassembled with substructure at through-passage or...
Patent
1986-04-07
1989-03-28
Wilson, Neill
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Threaded fastener locked to a discreet structure
Member preassembled with substructure at through-passage or...
411180, 411399, 411413, 4034081, F16B 3900, F16B 2300
Patent
active
048159077
ABSTRACT:
A fastener and a joint including the fastener, wherein the material in which the fastener is set is a composite. The fastener has a shank with an external helical rib that makes a slightly tighter than net to a moderate interference fit in a cylindrical wall of the hole. The rib has a form whose maximum radial protrusion is flat or convex, and which extends away from its maximum protrusion as a convex curve, devoid of sharp cutting edges. Voids between the convolutions of the rib are adequate to receive displaced material of the hole wall.
REFERENCES:
patent: 3418012 (1968-12-01), LaTorre
patent: 3630253 (1971-12-01), Sherman
patent: 3661406 (1972-05-01), Mele
patent: 3834438 (1974-09-01), Ziaylek, Jr.
patent: 3865006 (1975-02-01), Massoney
patent: 4097168 (1978-06-01), Pagel
Hatter Edwin E.
Hufnagl Gerhart
Williamson Herman L.
Hi-Shear Corporation
Mon Donald D.
Wilson Neill
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