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Tightening structure for locking and nut and washer for the tightening structure

  • US 20040057809A1
  • Filed: 07/03/2003
  • Published: 03/25/2004
  • Est. Priority Date: 01/12/2001
  • Status: Abandoned Application
First Claim
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1. A tightening structure for locking, comprising a nut, a bolt, and a washer with a hole through which an axis of said bolt passes, wherein, a recessed part symmetrical with respect to said axis and formed in a generally trapezoidal shape in cross section is formed in said nut on an inner washer side, a projected part symmetrical with respect to said axis and formed in a generally trapezoidal shape in cross section is formed on said washer on an inner nut side, and said recessed part of said nut is fitted to said projected part of said washer, and said hole in said washer is positioned on the inner side of said projected part and the center position of said hole is positioned eccentric to the center position of said projected part of said washer.

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