DRILL DISK BIT Russian patent published in 2008 - IPC E21B10/12 

FIELD: mining.

SUBSTANCE: bit contains U-shaped body, affixed in body axes with mounted on it disk cutter and annular rests, located between internal butts of disk cutter. Bit is outfitted by auger gearwheel on underside end, located in sludge discharge channel, implemented in bit body. Annular rests and contacted to them internal butts of disk cutters are implemented in the form of conical gears, and one of rests is affixed on vertically mounted rotating pin with ability of interaction with c auger gearwheel.

EFFECT: provides qualitative cleaning of bottom from sludge; synchronisation of its disk cutters operation; operation optimisation for all bit operator bodies and rising of shaft sinking and drilling velocity.

3 cl, 2 dwg