Percussive rock cutting tool

B - Operations – Transporting – 23 – Q

Patent

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B23Q 5/04 (2006.01) B23Q 11/00 (2006.01) B28D 1/18 (2006.01) E21B 4/00 (2006.01) E21B 7/24 (2006.01) E21B 10/08 (2006.01)

Patent

CA 2040071

The invention discloses a rock-cutting tool including a sleeve equipped with cutting elements and supported on a shaft, the sleeve being separately rotatable and eccentrically arranged in relation to the shaft whereby, in use, rotation of the shaft imparts a radially oscillating motion on the sleeve. At least one adjustable counterweight is connected to the shaft and located within the sleeve.

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