Granted Patent B2

US 12,385,395 · App. 18/349,574 · Granted Aug 12, 2025

Inventors: Russell P. Smith (New South Wales, AU); Andrew D Hunter (New South Wales, AU); Peter A. Lugg (Queensland, AU); Ian B. Schirmer (Queenland, AU); Geoffrey W Keech (Queensland, AU); Christopher Coates (Queensland, AU); Bradley M. Neilson (New South Wales, AU)

Assignee: Joy Global Underground Mining LLC

E21C35/23E21C25/06E21C25/16E21C27/16E21C31/02E21C35/00E21C35/24E21C41/16E21D9/102

Abstract

Claims (9)

1. A cutter head for a mining machine, the mining machine including a frame and a boom movably coupled to the frame, the cutter head comprising:

a first member including a first end and a second end;

a cutting bit coupled to the first member proximate the second end, the cutting bit having a cutting edge and configured to engage a rock surface;

a second member supported for rotation relative to the first member in an eccentric manner, rotation of the second member inducing an oscillating motion of the cutting bit;

a fluid conduit extending through the first member and configured to be in fluid communication with a fluid source; and

a plurality of nozzles positioned on the cutting edge, the nozzles in fluid communication with the fluid conduit.

2. The cutter head of claim 1 , wherein the fluid conduit includes first conduit and a second conduit, the first conduit extending through the first member in a direction generally parallel to the axis, the second conduit extending through the cutting bit and providing fluid communication between the first conduit and the nozzles, the second conduit extending in a direction that is angled with respect to the axis.

3. The cutter head of claim 1 , further comprising a motor, wherein the second member is supported on a shaft, the motor driving the shaft to rotate about the axis, the fluid conduit extending through the shaft.

4. The cutter head of claim 1 , wherein the cutting edge has a generally circular perimeter and includes a plurality of cutting tips positioned at regular intervals around the perimeter, and wherein each nozzle is positioned between adjacent cutting tips.

Assignments (2)

Continuity (6)

References Cited (250)