Patent ID: 7290515

Claim:
A camshaft for an internal combustion engine comprising a cam disk support shaft ( 2 ), a plurality of cam disks ( 3 ), and a drive wheel ( 4 ) attached to the cam disk support shaft ( 2 ) at certain sections of the cam disk support shaft ( 2 ), the cam disk support shaft ( 2 ) having an outer radius which continuously changes in those sections in which the cam disks ( 3 ) are attached, and the cam disks having a bore whose inner radius varies continuously over the circumference of the bore, said the cam disk support shaft ( 2 ) being alternately provided with elevations ( 7 ) and depressions ( 8 ) in those sections ( 2 a ) in which the cam disks ( 3 ) are attached, said elevations ( 7 ) and depressions ( 8 ) forming a wedge-shaped curve profile ( 9 ) about the circumference of the attachment sections ( 2 a ) of the cam disk support shaft ( 2 ), the elevations ( 7 ) continuously enlarging the outer radius of the cam disk support shaft ( 2 ), the bore ( 5 ) of the cam disks ( 3 ) being matched to the enlarged portion of the outer radius of the cam disk support shaft ( 2 ), so that around the circumference of the cam disk support shaft ( 2 ) and the bore ( 5 ) of the cam disks ( 3 ), a wedge-shaped curve profile ( 9 ) is provided permitting joining of the cam disks ( 3 ) and the drive wheel ( 4 ) to the support shaft ( 2 ) by relative rotation therebetween.