Method of fastening a guard rail by means of a guard rail bolt, the guard rail bolt and the tool for fastening the guard rail bolt

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8002506
APP PUB NO 20070209816A1
SERIAL NO

10599759

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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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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Patent Owner(s)

Patent OwnerAddress
SOCIETE DE PROSPECTION ET D'INVENTIONS TECHNIQUES SPIT150 ROUTE DE LYON BOURG LES VALENCE 26501

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Pourtier, Fabrice Portes les Vallence, FR 7 85
Ricordi, Christian Bourg les Valence, FR 19 57

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  • 9 Citation Count
  • B23P Class
  • 10.34 % this patent is cited more than
  • 14 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges513516217821101 - 1011 - 2021 - 3031 - 4041 - 5051 - 60100 +0100200300255075125150175225250275325350375

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