EP 0306414 B1 19911106 - SCALING DEVICE, IN PARTICULAR FOR HANGING ROCK WALLS IN MINES, UNDERGROUND CONSTRUCTION SITES OR THE LIKE
Title (en)
SCALING DEVICE, IN PARTICULAR FOR HANGING ROCK WALLS IN MINES, UNDERGROUND CONSTRUCTION SITES OR THE LIKE
Publication
Application
Priority
FR 8711384 A 19870806
Abstract (en)
[origin: US4871214A] The present invention is a device for removing boulders loosened by an explosion, from the hanging roof of a mining gallery. The device is a pole which supports a pneumatic hammer and a striking head at one end thereof and a gripping handle at its opposite end. The handle has a trigger mechanism for remote control of the pneumatic hammer. The inner section of the striking head is a formation of hollow, honeycombed cells, for reducing the weight of the striking head.
IPC 1-7
IPC 8 full level
B25D 17/04 (2006.01); E21C 37/22 (2006.01); E21C 37/24 (2006.01); B25D 17/02 (2006.01)
CPC (source: EP US)
E21C 37/22 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES GB GR IT LI SE
DOCDB simple family (publication)
EP 0306414 A1 19890308; EP 0306414 B1 19911106; AT E69293 T1 19911115; AU 2039688 A 19890209; DE 3866071 D1 19911212; FI 883564 A0 19880729; FI 883564 A 19890207; FR 2619157 A1 19890210; FR 2619157 B1 19911122; NO 883477 D0 19880804; NO 883477 L 19890207; PT 88213 A 19890630; PT 88213 B 19930930; US 4871214 A 19891003
DOCDB simple family (application)
EP 88420264 A 19880726; AT 88420264 T 19880726; AU 2039688 A 19880803; DE 3866071 T 19880726; FI 883564 A 19880729; FR 8711384 A 19870806; NO 883477 A 19880804; PT 8821388 A 19880805; US 23024388 A 19880805