Patent ID: 7669290

Claim:
An anti-vibratory handle for installation on a percussion drill supplied with a pressurized fluid and producing vibrations in the direction of an axis of reciprocation of the percussion drill, the anti-vibratory handle comprising: a stationary portion for being mounted to a body of the percussion drill and comprising a distal end; a mobile portion comprising a proximal end, wherein one of the distal end of the stationary portion and the proximal end of the mobile portion is provided with a shaft receiving barrel defining a pivot axis generally perpendicular to the axis of reciprocation of the percussion drill, wherein the other of the distal end of the stationary portion and the proximal end of the mobile portion includes a shaft for insertion in the shaft receiving barrel, and wherein the mobile portion comprises an arm member generally perpendicular to the pivot axis and a distal end including a hand-grip member so mounted to the arm member as to be generally parallel to the pivot axis but spaced apart therefrom; the shaft and shaft receiving barrel defining an articulation between the stationary and mobile portions allowing the mobile portion to pivot about the pivot axis with respect to the stationary portion; a control of the operation of the percussion drill mounted on the hand-grip member; a resilient vibration-damping assembly interposed between the distal end of the stationary portion and the proximal end of the mobile portion to avoid transmission of vibrations through the articulation; and at least one conduit for transmitting pressurized fluid between the percussion drill and the percussion drill operation control to allow the percussion drill to be operated through said percussion drill operation control, the at least one conduit extending through the stationary portion, the distal end of the stationary portion, the assembly comprising the shaft receiving barrel and the shaft inserted in the shaft receiving barrel, the proximal end of the mobile portion, the arm member of the mobile portion and the mobile portion.