ANTI-LOOSENING THREADED PART
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United States of America Patent
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Issued Date -
Jun 2, 2016
app pub date -
Apr 15, 2014
filing date -
Jul 3, 2013
priority date (Note) -
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Abstract
A cylindrical internal thread is arranged in an inner hole of the internal threaded part, a cylindrical external thread is arranged on a screw of the external threaded part, the root of the external thread or the internal thread has a wedge-shaped inclined surface forming an included angle a or an included angle β with a longitudinal center axis of the external thread or the internal thread. After the internal thread part and the external thread part are mutually tightened, a surface of the internal thread or the external thread and the wedge-shaped inclined surface are mutually close contact structure, that is, a horizontal locking structure, and as long as the surface of the internal thread or the external thread and the wedge-shaped inclined surface are in close contact through pretightening force, loosening can be prevented in cylindrical threaded part connecting pairs having threaded surfaces and made of various materials.
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