Method of making direct tension indicating washers
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United States of America Patent
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Aug 23, 2011
Grant Date -
Jan 20, 2011
app pub date -
Sep 27, 2010
filing date -
Dec 12, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A method of making a direct tension indicating washer including: forming a first surface having a discrete protuberance formed thereon; forming a second surface having a discrete indentation formed opposite the protuberance; and positioning an indicating material in the indentation, wherein the indicating material has a cured skin on an outside of the indicating material and a liquid core in an interior of the indicating material.
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