Percussion device with a control valve for two alternately...

Details Percussion device with a control valve for two alternately... Percussion device with a control valve for two alternately...

B - Operations, Transporting

25

D

B25D 9/18 (2006.01)

Patent

CA 2465400

The invention relates to a percussion device comprising two percussion pistons alternately making a percussion motion and a control valve for controlling the percussion pistons The control valve comprises a slide affected by a force so that the slide is generally in a first position, but moves at the end of the percussion motion of the first percussion piston from the first position to a second position and correspondingly back to the first position at the end of the percussion motion of the second percussion piston.

L'invention concerne un outil à percussion comprenant deux pistons de percussion produisant alternativement un mouvement de percussion, et une soupape de commande pour commander ces pistons. La soupape de commande (7) comprend un élément coulissant (8) soumis à une force qui le maintient de manière générale dans une première position ; cet élément se déplace cependant, à la fin du mouvement de percussion du premier piston, de la première position vers une deuxième position, et, de façon correspondante, est ramené dans la première position à la fin du mouvement de percussion du deuxième piston (4).

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