Title:
ANTI-THEFT AND ANTI-SWAP NON-STANDARD FASTENING PIECE
Document Type and Number:
WIPO Patent Application WO/2017/100962
Kind Code:
A1
Abstract:
An anti-theft and anti-swap non-standard fastening piece comprises a fastening bolt or a screw, and a nut, wherein the thread of the screw or the bolt is a non-isometric thread, the back thread angle being smaller than the front thread angle, and the screw-in end of the screw or the bolt being a front end while the nut being the opposite. In addition to the anti-theft and anti-swap effects, the anti-theft and anti-swap standard fastening piece is also easy to fasten while hard to loosen.
Inventors:
XU HAIJUN (CN)
Application Number:
PCT/CN2015/000901
Publication Date:
June 22, 2017
Filing Date:
December 14, 2015
Export Citation:
Assignee:
XU HAIJUN (CN)
International Classes:
F16B41/00
Foreign References:
| CN2791114Y | 2006-06-28 | |||
| CN2750427Y | 2006-01-04 | |||
| CN2504428Y | 2002-08-07 | |||
| US4171662A | 1979-10-23 | |||
| US3286754A | 1966-11-22 |
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