Anti-seizing nut
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United States of America Patent
Stats
-
May 5, 2015
Grant Date -
May 29, 2014
app pub date -
Jan 31, 2014
filing date -
Aug 31, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
Provided is a nut into which a bolt (10) including a male-threaded portion with a male-threaded external diameter d and a male-threaded core diameter d1 is screwed, wherein a bolt insertion side end of a female-threaded portion (21) formed in a nut body (20) is provided with an incompletely threaded female portion (22) that is formed by one to three pitches so that an internal diameter dimension D is larger than (d+d1)/2 and is smaller than the male-threaded external diameter d. Accordingly, even when the bolt is screwed into the nut in the inclination direction, the bolt may be rotated about a contact surface with respect to the incompletely threaded female portion (22), and hence seizing may be prevented.
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