Patent ID: 11931875
Assignee: DUBOIS ET CIE S.A.A
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A power tool operable with an exchangeable tool head, the power tool comprising:
a tool body extending longitudinally along a tool axis to a free end;
a hydraulic cylinder, the hydraulic cylinder including a main piston movable inside the hydraulic cylinder under the effect of an injection of pressurised fluid into an interior of the cylinder;
a quick coupling system arranged at the free end of the tool body and comprising:
an actuation unit; and
a locking unit movable by the actuation unit between a released position and a locked position to secure the exchangeable head to the tool body, and the locking unit comprises a first half-ring and a second half-ring radially movable between the released position and the locked position; and
the quick coupling system further comprises a sleeve slidingly arranged around the quick coupling system, the sleeve movable along the tool axis;
the actuation unit is connected to the sleeve and adapted to be radially moved by the sleeve from a rest position to an active position; and
when the actuation unit is in the rest position then the first half ring and the second half ring are in the locked position; and when the actuation unit is in the active position then the first half ring and the second half ring are forced in the released position; and
wherein in the locked position the locking unit is adapted to secure the exchangeable head to the tool body, such that transmission forces can be exchanged between the exchangeable head and the main piston, and
wherein in the released position the locking unit is adapted to release any force applied to the exchangeable head in order to remove the exchangeable head.