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US 5,327,980 AGranted
Drill head
OwnerMarc J. M. Smetinventor
Life of this patent
Estimating the term…
Abstract
A drill head for making a hole in the ground, said drill head comprising a mantle (1), a spraying device carrier (3) mounted inside the mantle (1) so it can rotate, a motor (2) installed inside the mantle (1) driving this spraying device carrier (3), at least one spraying device (4) eccentrically mounted on the spraying device carrier (3) and a pipe line (11) for fluid in order to supply fluid to the spraying device (4), characterized in that the spraying device (4) is a turbo-jet.
Claims11
A drill head for making a hole in the ground, the drill head comprising:
- a mantle;
- a spraying device carrier mounted inside the mantle so that it can rotate;
- a motor installed inside the mantle for driving the spraying device carrier;
- two turbo-jets each being eccentrically mounted on the spraying device carrier;
- and
- a first pipe line for supplying fluid to the turbo-jets.
3 more elements
Dependencies are inferred from the claim text.