Blindly installed, reinforceable nuts for joining structural members
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United States of America Patent
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Issued Date -
Apr 13, 2006
app pub date -
Oct 13, 2004
filing date -
Oct 13, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A blind nut installed in a structural joint provides an interference fit and a fatigue enhancing benefit to the structural joint. A bolt can be inserted into the nut for additional shear strength and shear continuity. During installation in the structural joint, a first flange of the nut is seated against a first structural member, an installation tool is inserted into a passage in the nut, and the tool is operated to buckle a collapsible portion of the nut to form a second flange on a second structural member. Contemporaneously, an expandable portion of the nut is radially expanded into the structural joint. The installation process induces a high interference fit and may also induce a residual compressive stress in the structural joint.
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