Patent ID: 7958859

Claim:
A camshaft assembly comprising an inner shaft, an outer tube surrounding and rotatable relative to the inner shaft, and two groups of cam lobes mounted on the outer tube, the first group of cam lobes being fast in rotation with the outer tube, the second group being rotatably mounted on the outer surface of the tube and connected for rotation with the inner shaft by means of driving members that engage with driving features on the inner shaft and the second group of cam lobes and extend through circumferentially elongated slots in the outer tube, whereby the inner shaft and the second group of cam lobes are able to rotate relative to the outer tube and the first group of cam lobes, wherein the positions of the driving members are adjustable relative to the driving features on the inner shaft or the driving features on the second group of cam lobes in order to compensate for variations in the positions of the driving features on the inner shaft and the second group of cam lobes in a direction perpendicular to the axis of the inner shaft resulting from manufacturing inaccuracies.