E - Fixed Constructions – 02 – F
Patent
E - Fixed Constructions
02
F
E02F 5/20 (2006.01) A01K 97/01 (2006.01) E21B 7/00 (2006.01) E21B 10/44 (2006.01)
Patent
CA 2434378
A cutting auger for example for ice has a main auger blade and a front subsidiary coaxial blade each having a drive core and a helical auger flight carried on the drive core for rotation about a longitudinal axis of the drive core with a cutting edge at an axial end face of the auger flight such that when rotated the cutting edge cuts a hole equal in diameter to the helical flight and the helical flight carries the cut material away from the cutting edge. The second auger blade having a smaller diameter than the first and is shorter than file first and is arranged with the helical turns thereof in opposed angular direction. A planetary drive system is arranged to rotate the first and second cutting augers in opposed direction with the first driven at a slower angular velocity than the second so as to balance the torque.
Battison Williams Dupuis
Maki Brian V.j.
LandOfFree
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