Tension-indicating fasteners
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United States of America Patent
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-
Jun 12, 2001
Grant Date -
N/A
app pub date -
Sep 24, 1999
filing date -
Sep 25, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention provides several embodiments of tension-indicating fasteners that include tension indicators having indicating arms equipped with a laterally-extending contact member or a foot portion. A contact member extends in a tangential direction from the fastener head. The indicating arm is secured to the fastener and, by having laterally-distant contact points, the deflection of a substrate caused by the fastener head causes a distal end of the indicating arm to move with amplified magnitude. In still other embodiments of the invention, a fastener includes tension indicia for indicating a target degree of substrate deflection. The tension indicator may be disposed within a recess in the fastener head to allow the use of conventional tightening tools.
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