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

Claim 11:
12. 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 including a first actuation part and a second actuation part, and both the first actuation part and the second actuation part each includes a first actuation segment and a second actuation segment; 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 includes:
a first half-ring and a second half-ring radially movable between the released position and the locked position,
a first end portion and a second end portion on each of the first half-ring and the second half-ring, and each of the first end portion and the second end portion comprise a groove;
each of the second actuation segments partly extend within the respective groove: 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.