Title:
緩み止めナット
Document Type and Number:
Japanese Patent JP4495849
Kind Code:
B2
Abstract:
An anti-loosening nut assembly is composed of an upper nut 3 and a lower nut 2 that engage with each other in an eccentric manner to afford the so-called "wedging' effect of surely inhibiting them from loosening themselves. The upper nut 3 has one or more lateral lugs to be brought into contact with the lower end of a fastening tool such as a spanner. The lug or lugs 3b protrudes or protrude from the outer peripheral portion or portions of the upper nut 3 for the purpose of visual detection of rotation angle of this nut.
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Inventors:
Katsuhiko Wakabayashi
Application Number:
JP2000339444A
Publication Date:
July 07, 2010
Filing Date:
November 07, 2000
Export Citation:
Assignee:
Hardlock Industry Co., Ltd.
International Classes:
F16B37/00; F16B39/12; F16B23/00; F16B31/02
Domestic Patent References:
| JP6337012A | ||||
| JP59011983U | ||||
| JP45027153Y1 | ||||
| JP55071810U |
Attorney, Agent or Firm:
Taro Murakami