Patent ID: 7220208

Claim:
An arrangement for lubricating a gear, said arrangement comprising: a first gearwheel ( 402 , 602 , 702 ) in engagement with a second gearwheel ( 404 ); teeth of the first gearwheel having an axial extent longer than the entire axial extent of teeth of the second gearwheel; a first tooth surface of the first gearwheel being in engagement with the teeth of the second gearwheel; a second tooth surface of the first gearwheel ( 402 , 602 , 702 ) constituting a part in a spline joint together with corresponding internal teeth of a gear element ( 423 , 623 , 723 , 823 ); and a lubricant duct ( 429 , 629 , 729 , 829 ) arranged to conduct lubricant to the first tooth surface and said lubricant duct ( 429 , 629 , 729 , 829 ) formed as a space between a tooth tip and a corresponding tooth root in the spline joint.