Title:
ガードレールボルトによってガードレールを固定する方法、ガードレールボルト、および、ガードレールボルトを固定するための工具
Document Type and Number:
Japanese Patent JP2007532834
Kind Code:
A
Abstract:
A self-expanding and self-undercutting guard rail bolt includes a dowel having a guard rail fastening end and a ring. The fastening end is configured to be driven in rotation, and the ring is configured to rigidly connect to a first screwing end of the dowel by an incipient fracture portion. The self-expanding and self-undercutting guard rail bolt further includes a counter-dowel screwed to the dowel by a second screwing end. The counter-dowel includes an expansion cone, and an anti-rotation head having at least one edge which projects beyond a periphery of the dowel to prevent rotation of the counter-dowel about an axis of the guard rail bolt.
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Inventors:
Purtier, Fabrice
Ricordi, Christian
Ricordi, Christian
Application Number:
JP2007506860A
Publication Date:
November 15, 2007
Filing Date:
April 06, 2005
Export Citation:
Assignee:
Societe de Prospection Edinvention Technik Spirit
International Classes:
F16B13/06; B25B23/00; B25B31/00; E04F11/18; F16B13/08; F16B31/04; F16B35/04
Domestic Patent References:
| JPH02304207A | 1990-12-18 | |||
| JPS62111043A | 1987-05-22 | |||
| JPH0369805A | 1991-03-26 | |||
| JPH02159405A | 1990-06-19 | |||
| JPH0587110A | 1993-04-06 | |||
| JPH07224819A | 1995-08-22 | |||
| JPS63284336A | 1988-11-21 | |||
| JP2001271817A | 2001-10-05 |
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tetsuro Shimada
Shinozaki Masami
Jun Tsuruta
Tetsuro Shimada
Shinozaki Masami