Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Frangible member
Patent
1990-07-11
1991-10-01
Lindsey, Rodney M.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Frangible member
411 70, F16B 1304
Patent
active
050528700
ABSTRACT:
A blind fastener comprises a fastener body, a stem and a shaped shear ring wire. The shear ring in one embodiment is disposed in an annular groove disposed intermediate the ends of a neck of the stem. When the fastener is installed, a bulbing portion of the shear ring upsets the tail end of the fastener and then shears at a predetermined load. An anchor portion of the shear ring travels through the fastener body, with the stem neck radially expanding the fastener to fill the hole within the workpieces being secured together. A lock ring groove is formed in the stem midsection of smaller diameter at the intersections of the stem neck and midsection. In another embodiment, the shear ring is positioned at the intersection so that the shear ring anchor portion engages the rear of a lock ring positioned in said lock ring groove.
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Pratt John D.
Zermeno Mario A.
Lindsey Rodney M.
Textron Inc.
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