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(11) | EP 2 942 473 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | A HOLE CUTTING DEVICE |
| (57) Devices for cutting holes in the ground typically have to be raised regularly to
clear the debris from the hole. This is effected by a line attached to a bracket on
the cutting assembly. However, the line can get wound around the rotating drive shaft
which can be dangerous and prevent lifting of the assembly. Accordingly, a hole cutting
device (10) is provided comprising: a first sleeve (25) for rotation by a drive member
(20), the drive member (20) including a pilot hole cutting means (40) for creating
a pilot hole having a first diameter; at least one first cutting member (160) linked
to the first sleeve (25) for rotation thereof for cutting a hole having a second diameter
larger than the first diameter; a bracket (140) for raising and lowering of the device
(10) relative to the drive member (20); and anti-rotation means (90, 100) for maintaining
the bracket (140) substantially rotationally stationary relative to the pilot hole;
wherein the anti-rotation means comprises at least one ground engaging member (50)
for engaging with a side (50) of the pilot hole.
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