Title:
AN ANTI-DISSEMBLING FERRULE FOR BOLT, A PUNCH AND A DRILLING PLATE
Document Type and Number:
WIPO Patent Application WO/2007/006223
Kind Code:
A1
Abstract:
An anti-departing ferrule for bolt is provided with an inner hole in the middle thereof.
A lower surface closely contacted with a work-piece is located in the lower of
said ferrule. The shape of the ferrule is approximately partially spherical or
is a combined shape of circular truncated cone and partially spherical. Moreover, the
surface of the ferrule is smooth and has no taper inner hole, and the shape of an
inner hole is corresponding with that of a bolt head or nut. Furthermore, press-fitting engagement
is formed between said inner hole and said bolt head or nut. A spacer-installing space
is provided, viewing from the direction of said lower surface of the ferrule. On
the other hand, an anti-loosening post inserted in a hole of a work-piece has reliable
anti-loosening function for a bolt.
Inventors:
WANG XINMIN (CN)
Application Number:
PCT/CN2006/001618
Publication Date:
January 18, 2007
Filing Date:
July 10, 2006
Export Citation:
Assignee:
WANG XINMIN (CN)
International Classes:
F16B41/00; B23B47/28; B30B1/00
Foreign References:
JP2000104720A | 2000-04-11 | |||
CN1417493A | 2003-05-14 | |||
US6843153B1 | 2005-01-18 | |||
CN2564790Y | 2003-08-06 |
Attorney, Agent or Firm:
DRAGON INTERNATIONAL PATENT OFFICE (12 Yumin Street Chaoyang District, Beijing 9, CN)
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