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
Stats
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Aug 23, 2011
Grant Date -
Sep 13, 2007
app pub date -
Apr 6, 2005
filing date -
Apr 8, 2004
priority date (Note) -
Expired
status (Latency Note)
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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.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
SOCIETE DE PROSPECTION ET D'INVENTIONS TECHNIQUES SPIT | 150 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 |
# of filed Patents : 7 Total Citations : 85 | |||
Ricordi, Christian | Bourg les Valence, FR | 19 | 57 |
# of filed Patents : 19 Total Citations : 57 |
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Patent Citation Ranking
- 9 Citation Count
- B23P Class
- 10.34 % this patent is cited more than
- 14 Age
Forward Cite Landscape
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

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Date | Code | Event | Description |
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Aug 19, 2021 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 4 |
Mar 27, 2018 | I | Issuance | |
Mar 07, 2018 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Sep 24, 2015 | P | Published | |
Mar 02, 2015 | F | Filing | |
Feb 23, 2015 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TANAKA, YU;REEL/FRAME:035933/0041 Owner name: CANON KABUSHIKI KAISHA, JAPAN Effective Date: Feb 23, 2015 |
Mar 18, 2014 | PD | Priority Date |

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