Patent ID: 8206055

Claim:
A shaft connection assembly comprising: an extension shaft and a power take-off (PTO) shaft secured to the extension shaft, the assembly having an annular locking element for preventing disconnecting of the shafts in the axial direction, the PTO shaft having a hub with first means connecting to the extension shaft, the extension shaft having, at a distal end, second means for connecting to the hub, the locking element is arranged on the PTO shaft, characterized in that: the locking element comprises a first gear which is complementary to a second gear, proximal of said second means, on the extension shaft, the locking element being received by a hollow portion of the PTO shaft, the extension shaft being insertable into the locking element, the locking element is twistable relative to the PTO shaft from a locked position to an unlocked position, in the locked position the gears overlap each other such that a connection between the two shafts is axially secured by engagement of the first gear with the second gear, in the unlocked position the gears do not overlap such that the gears are relatively movable in the axial direction, wherein the locking element is pressed by a pretension force into the locked position in a direction opposite a normal direction of rotation of the PTO shaft, the pretension force being generated by a torsion spring.