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1. PL2384391 - YIELDING BOLT AND ASSEMBLY

Office
Poland
Application Number 10814418
Application Date 01.09.2010
Publication Number 2384391
Publication Date 30.11.2015
Publication Kind T3
IPC
E21D 20/02
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
20Setting anchoring-bolts
02with provisions for grouting
E21D 21/00
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
21Anchoring-bolts for roof, floor, or shaft-lining protection
CPC
E21D 21/0006
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
21Anchoring-bolts for roof, floor ; in galleries or longwall working; , or shaft-lining protection
0006characterised by the bolt material
E21D 21/0033
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
21Anchoring-bolts for roof, floor ; in galleries or longwall working; , or shaft-lining protection
0026characterised by constructional features of the bolts
0033having a jacket or outer tube
E21D 21/004
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
21Anchoring-bolts for roof, floor ; in galleries or longwall working; , or shaft-lining protection
0026characterised by constructional features of the bolts
004Bolts held in the borehole by friction all along their length, without additional fixing means
E21D 21/0046
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
21Anchoring-bolts for roof, floor ; in galleries or longwall working; , or shaft-lining protection
0026characterised by constructional features of the bolts
0046formed by a plurality of elements arranged longitudinally
E21D 21/02
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
21Anchoring-bolts for roof, floor ; in galleries or longwall working; , or shaft-lining protection
02having means for indicating tension
Inventors JOHN G. OLDSEN
YAOKUN WU
MARC W. LAMOTHE
Agents Ogólne / Eliza Stypińska
Priority Data 238849 P 01.09.2009 US
Title
(EN) YIELDING BOLT AND ASSEMBLY
(PL) Kotwa podatna oraz zespół