EP 2547867 A1 20130123 - A YIELDING SPIRAL BOLT APPENDAGE FOR A ROCK BOLT
Title (en)
A YIELDING SPIRAL BOLT APPENDAGE FOR A ROCK BOLT
Title (de)
NACHGIEBIGES SPIRALBOLZENELEMENT FÜR FELSANKER
Title (fr)
APPENDICE DE BOULON EN SPIRALE ELASTIQUE POUR UN BOULON D'ANCRAGE
Publication
Application
Priority
CA 2010000382 W 20100319
Abstract (en)
[origin: WO2011113131A1] A yielding spiral bolt appendage for attachment to a rock bolt has a cylindrical shank portion for attachment to the insertion end of the rock and a helical flute portion having a tip for rupturing a resin cartridge and achieving mixing when rotated. The shank has a first tapered portion and a second tapered portion for resisting movement of the appendage once the resin has set.
IPC 8 full level
E21D 21/00 (2006.01); E21D 20/02 (2006.01)
CPC (source: EP US)
E21D 20/026 (2013.01 - EP US); E21D 21/004 (2013.01 - EP US)
Citation (search report)
See references of WO 2011113131A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
WO 2011113131 A1 20110922; AU 2010348888 A1 20120322; AU 2010348888 A8 20131219; AU 2010348888 B2 20140109; CA 2767209 A1 20110922; CA 2767209 C 20130813; EP 2547867 A1 20130123; MX 2012002391 A 20120402; US 2013004245 A1 20130103
DOCDB simple family (application)
CA 2010000382 W 20100319; AU 2010348888 A 20100319; CA 2767209 A 20100319; EP 10847636 A 20100319; MX 2012002391 A 20100319; US 201013143922 A 20100319