Patent ID: 7987828

Claim:
A device for adjusting an angular position of an internal combustion engine camshaft in relation to the engine crankshaft comprising: (a) a camshaft connector fixed at an input end of a camshaft, the camshaft connector having a cylindrical, axial connector housing and a plurality of connector teeth extending axially and helically from one end of the connector housing; (b) a crankshaft sprocket rotatably mounted at the input end of the camshaft and engageable with an engine crankshaft, the crankshaft sprocket having a cylindrical, axial sprocket housing and a plurality of sprocket teeth extending radially outward from one end of the sprocket housing, each of the sprocket teeth having axial, slanted sidewalls that are parallel to each other and equal and opposite a corresponding sidewall of the connector teeth, the one end of the connector housing facing the one end of the sprocket housing and the connector teeth extending over the one end of the sprocket housing; (c) a sprocket sliding ring axially and rotatably mounted on the sprocket housing, the sprocket ring having a ring housing, a fin extending radially outward from the ring housing, a plurality of sprocket ring teeth extending trapezoidally and axially from the ring housing, and a shoulder extending radially outward from a distal end of the sprocket ring teeth, the sprocket ring teeth extending over the one end of the sprocket housing such that non-parallel axial, sidewalls of the sprocket ring teeth mating with a corresponding sidewall of the connector teeth and the sprocket teeth; (d) a connector sliding ring axially and rotatably mounted on the connector housing, the connector ring having a ring housing, a fin extending radially outward from the ring housing, a plurality of connector ring teeth extending trapezoidally and axially from the ring housing and a shoulder extending radially outward from a distal end of the connector ring teeth, the connector ring teeth extending over the one end of the sprocket housing such that non-parallel axial sidewalls of the connector ring teeth made with a corresponding sidewall of the connecting teeth and the sprocket teeth; (e) a spring washer is axially movable mounted over both the sprocket ring teeth and the connector ring teeth, between the connector ring shoulder and the sprocket ring shoulder and between the connector ring shoulder and a proximal end of the connector ring teeth and the sprocket ring shoulder and a proximal end of the sprocket ring teeth; and (f) a fin moving means for axially moving the sprocket ring fin and the connector ring fin to adjust the angular position of the camshaft in relation to the crankshaft.