E - Fixed Constructions – 21 – C
Patent
E - Fixed Constructions
21
C
262/50
E21C 25/06 (2006.01) E21C 27/02 (2006.01) E21C 27/24 (2006.01)
Patent
CA 1167480
ABSTRACT OF THE DISCLOSURE A longwall mining system includes a bidirectional shearer and a roof supporting structure. The shearer includes a pair of angled floor drums, a pivotable roof drum and a loading conveyor. Each drum has a plurality of picks disposed about the drum surface for cutting a material to be mined and a plurality of vanes disposed on the drum surface for carrying the cut material to the loading conveyor. The roof supporting structure includes a load carrying shield which is braced by a pair of supports. The supports are located under the shield in a position between the shearer and a face conveyor. The face conveyor, which is fed by the loading conveyor, carries the mined material to a main conveyor for haulage to the outside.
396708
Guay Paul J.
Ludlow Jonathan E.
Peake Cecil V.
Borden Ladner Gervais Llp
Foster-Miller Associates Inc.
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