Cutter head with cutting members that rotate relative to each ot

Details Cutter head with cutting members that rotate relative to each ot Cutter head with cutting members that rotate relative to each ot

1998-05-04

1999-12-21

Bagnell, David

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Plural heads moving relative to each other

299 59, 299 60, E21C 2506

Patent

active

060039531

ABSTRACT:
A cutter head comprising a plurality of coaxially disposed transmission shafts including a central transmission shaft and at least two tubular transmission shafts with each shaft having a cutting member, the shafts being driven independently with one another and any two radially adjacent shafts being driven to rotate in opposite directions, wherein diameters of the shafts are determined in such a manner that a sum of cutting areas covered by the cutting members of the shafts rotating in one direction is substantially equal to a sum of the cutting areas covered by cutting members of the shafts rotating in the opposite direction.

REFERENCES:
patent: 3064958 (1962-11-01), Osgood
patent: 4627501 (1986-12-01), Ebeling

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