Title:
A FASTENING APPARATUS AND A SPECIAL TOOL THEREOF
Document Type and Number:
WIPO Patent Application WO/2003/029668
Kind Code:
A1
Abstract:
The invention relates to a fastening apparatus made of metal or plastic, and particularly to a retaining and lock thread fastener and a special tool therefor. The apparatus includes a thread fastener and washer, on their end surface facing to each other there are provided with a plurality of retaining teeth respectively, the retaining teeth of one end surface are elastic. The apparatus is configured to have the retaining teeth of the thread fastener engaging with those of the washer so that in various vibration conditions it has advantages of reliable rataining and convenient assembly and disassembly and can be used repeatedly. Once the lock fastener is fastened, a conventional tool could not disassemble it. The apparatus according to the present invention can be widely adapted to lock parts of various devices and manufactured easily with lower cost.
Inventors:
ZHAO YAO (CN)
WANG CHENG (CN)
WANG CHENG (CN)
Application Number:
PCT/CN2001/001463
Publication Date:
April 10, 2003
Filing Date:
September 28, 2001
Export Citation:
Assignee:
ZHAO YAO (CN)
WANG CHENG (CN)
WANG CHENG (CN)
International Classes:
B25B13/04; B25B13/48; F16B39/24; F16B39/282; (IPC1-7): F16B39/282; F16B39/24
Foreign References:
| CN2140441Y | 1993-08-18 | |||
| CN2388397Y | 2000-07-19 | |||
| US5080545A | 1992-01-14 |
Other References:
See also references of EP 1443226A4
Attorney, Agent or Firm:
CHINA SCIENCES PATENT & TRADEMARK AGENT LIMITED (Zhongke Building 80 Haidian Roa, Haidian District Beijing 0, CN)
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