Variable force/variable frequency sonic drill head

Details Variable force/variable frequency sonic drill head Variable force/variable frequency sonic drill head

E - Fixed Constructions

21

B

E21B 7/24 (2006.01) E21B 19/08 (2006.01) E21B 19/22 (2006.01)

Patent

CA 2755363

An oscillator assembly includes a first eccentrically weighted rotor having a first eccentric weight configured to rotate about an axis, a second eccentrically weighted rotor having a second eccentric weight configured to rotate about the axis. Rotation of the first eccentrically weighted rotor is coupled to rotation of the second eccentrically weighted rotor. An actuator is configured to vary an angular separation between the first eccentric weight and the second eccentric weight.

L'invention porte sur un ensemble oscillateur qui comprend un premier rotor à poids excentré dont un premier poids excentré est configuré pour tourner autour d'un axe, et un second rotor à poids excentré dont un second poids excentré est configuré pour tourner autour d'un axe. La rotation du premier rotor à poids excentré est couplée à la rotation du second rotor à poids excentré. Un actionneur est configuré pour modifier la séparation angulaire entre le premier poids excentré et le second poids excentré.

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