Laminated nut with tension indicator
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United States of America Patent
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Sep 7, 2010
Grant Date -
Aug 14, 2008
app pub date -
Feb 13, 2007
filing date -
Feb 13, 2007
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A laminated nut with a visual indicator indicating if the nut is in a fully tightened state. The nut includes a plurality of conical disc springs enclosed in a cage. In one embodiment, a visual indicator extends axially from the upper surface of the outermost disc spring. In one embodiment, the visual indicator is retracted into the cage when the disc springs flatten as the nut is tightened. In one embodiment, the visual indicator aligns with a reference point on the cage when the nut is fully tightened. In one embodiment, the visual indicator is made more apparent by marking the visual indicator with a contrasting color.
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