Patent ID: 8448617

Claim:
A camshaft comprising: a first shaft defining an axial bore; a second shaft located within the axial bore, rotatable relative to the first shaft and defining a radial passage; a first partial cam lobe located on the first shaft and including a first peak region, the first partial cam lobe defining a partial bore and a first recess extending in a radial direction through the partial bore and into the first partial cam lobe, the partial bore having a circumferential extent from a first circumferential end of the first partial cam lobe to a second circumferential end of the first partial cam lobe, a radial distance defined by the partial bore between the first circumferential end and the second circumferential end being greater than or equal to a radial width of the first shaft; a first sleeve located within the radial passage and the first recess and radially locating the first partial cam lobe relative to the second shaft; a second cam lobe located on and fixed for rotation with the first shaft, the first partial cam lobe being rotatable relative to the first shaft and the second cam lobe; and a fastener extending radially through the second shaft, through the first sleeve, through a circumferentially extending slot in the first shaft and into the first partial cam lobe to fix the first partial cam lobe for rotation with the second shaft while allowing relative rotation between the first partial cam lobe and the first shaft.