(19)
(11) EP 1 939 394 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
28.01.2009 Bulletin 2009/05

(43) Date of publication A2:
02.07.2008 Bulletin 2008/27

(21) Application number: 07254935.5

(22) Date of filing: 19.12.2007
(51) International Patent Classification (IPC): 
E21D 20/02(2006.01)
E02D 5/80(2006.01)
 E21D 21/00(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK RS

(30) Priority: 19.12.2006 DE 102006059891

(71) Applicant: Minova International Limited
1 Des Roches Square Witan Way, Witney, Oxon OX28 4LF (GB)

(72) Inventors:
  • Grocholewski, Marek
    PL-61-627 Poznan (PL)
  • Bitz, Charles
    8902 Urdorf (CH)
  • Steiert, Roger
    8964 Rudolfstetten-Friedslisberg (CH)
  • Wittmann, Rémy
    68130 Altkirch (FR)
  • Bartkowski, Casimir
    68790 Morschwiller le Bas (FR)

(74) Representative: Peel, James Peter 
Barker Brettell LLP 10-12 Priests Bridge
London SW15 5JE
London SW15 5JE (GB)

   


(54) Anchor with grout jacket


(57) An anchor 1 for consolidating non-cohesive rock layers or for connecting them to solid rock 2 primarily has the necessary components for realising a stressed or expansion anchor. Furthermore, when a conventional domed plate 10 is used, which reliably transmits the necessary stress forces, it is possible additionally to bond the anchor bar 4 in the drill hole 3 after stressing. To this end, the anchor bar 4 is either constructed with a connecting tube 22 with distributor head 24 or the sheathing tube 11 comprises a top tube 50, these both fulfilling the task of conveying the grout bonding material 12 reliably from the drill hole mouth end of the anchor bar 4 to the rock end 5A and then diverting it there and returning it to the drill hole mouth, so ensuring complete fixing and sheathing of the anchor bar 4 in the drill hole 3.







Search report