EP 0021987 B1 19830713 - MACHINE FOR DRIVING UNDERGROUND GALLERIES
Title (en)
MACHINE FOR DRIVING UNDERGROUND GALLERIES
Publication
Application
Priority
FR 7915908 A 19790621
Abstract (en)
[origin: US4362337A] The system for digging subterranean galeries comprises a cutting tool articulated on a frame and mounted so as to be movable along the height of the mine face. This frame is provided with ground support means and with propulsion means for following the progress of the cutting, the articulation point of the cutting tool being situated in the upper half of the system in operating position. The articulation point of the cutting tool may be situated on a member movable with respect to the frame and movable in a direction substantially parallel to the direction of advance. The shaft bearing the cutting tool may be mounted on two bearings, one of which is movable vertically to give the tool an oblique path in a pre-determined direction.
IPC 1-7
IPC 8 full level
E21C 27/22 (2006.01); E21C 29/24 (2006.01); E21D 9/10 (2006.01)
CPC (source: EP US)
E21C 27/22 (2013.01 - EP US); E21C 29/24 (2013.01 - EP US); E21D 9/102 (2013.01 - EP US); E21D 9/1026 (2013.01 - EP US); E21D 9/1093 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0021987 A1 19810107; EP 0021987 B1 19830713; AT E4135 T1 19830715; DE 3064115 D1 19830818; FR 2459360 A1 19810109; FR 2459360 B1 19860418; US 4362337 A 19821207
DOCDB simple family (application)
EP 80400890 A 19800618; AT 80400890 T 19800618; DE 3064115 T 19800618; FR 7915908 A 19790621; US 16045980 A 19800618