Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Tooth mounted on helical head portion or head with helical...
Patent
1992-08-21
1993-07-27
Bagnell, David J.
Mining or in situ disintegration of hard material
Cutter tooth or tooth head
Tooth mounted on helical head portion or head with helical...
299 87, 299 91, E21C 2510
Patent
active
052305481
ABSTRACT:
A cutter drum has a sump ring and a plurality of vanes, the exterior surfaces of the sump ring and vanes being substantially smooth. The vanes and sump ring contain holes for receiving cutting bits for cutting material to be mined, the cutting bits being removably mounted in the holes. Retaining blocks are removably mounted in the vanes or sump ring for engaging a base portion of the cutting bit and retaining the cutting bit in the cutting drum.
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