Percussion device

Details Percussion device Percussion device

B - Operations, Transporting

25

D

B25D 9/26 (2006.01) E21B 1/26 (2006.01)

Patent

CA 2602937

The invention relates to a method for controlling the operation of a pressure fluid operated percussion device and to a pressure fluid operated percussion device. The method comprises influencing the shape of a stress wave by set- ting a suitable clearance between a transmission piston (5) and a tool (3). The percussion device is provided with means for setting the clearance between the transmission piston (5) and the tool (3).

L~invention concerne un procédé de commande du fonctionnement d~un dispositif à percussion à fluide sous pression et un dispositif à percussion à fluide sous pression. Le procédé comprend l~action exercée sur la forme d~une onde de contrainte par l~établissement d~un jeu adapté entre un piston de transmission (5) et un outil (3). Le dispositif à percussion comporte des moyens d~établir le jeu entre le piston de transmission (5) et l~outil (3).

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