Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Frangible member
Patent
1990-01-31
1991-10-15
Lindsey, Rodney M.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Frangible member
411 34, F16B 1304
Patent
active
050569732
ABSTRACT:
A blind fastener comprises a fastener body, a stem and a shaped shear ring wire. The shear ring is disposed in an annular groove disposed intermediate the ends of a neck portion 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 anchored portion of the shear ring travels through the fastener body, with an enlarged neck portion of the stem 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.
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Pratt John D.
Zermeno Mario A.
Lindsey Rodney M.
Textron Inc.
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