Patent ID: 7900448
Filing Date: 2011-03-08
Classification: B25D,E21B,F15B

Abstract:
1. Pulse generator ( 18 ) in an impulse generator ( 2 ) for a cutting tool ( 12 ), which pulse generator ( 18 ) is intended to transfer energy from a propulsion device ( 14 ) to impulses in the tool ( 12 ), characterized in, that the pulse generator ( 18 ) comprises a rotatable cylinder drum ( 28 ) comprising at least one piston cylinder ( 30 , 86 , 88 , 90 , 92 , 94 , 96 , 98 ), in which piston cylinder ( 30 , 86 , 88 , 90 , 92 , 94 , 96 , 94 ) is arranged at least one piston ( 32 , 87 , 89 , 91 , 93 , 95 , 97 , 99 ), which piston ( 32 , 87 , 89 , 91 , 93 , 95 , 97 , 99 ) is arranged to compress fluid ( 29 ) during rotation of the cylinder drum ( 28 ), and that the cylinder drum ( 28 ) is arranged to discharge the fluid ( 29 ) to the propulsion chamber ( 6 ) in the discharge position of the piston ( 32 , 87 , 89 , 91 , 93 , 95 , 97 , 99 ) via at least one opening ( 31 , 72 , 74 , 76 , 78 , 80 , 82 , 84 ) opening into the piston cylinder in order to produce an impulse in the tool ( 12 ).