Differential camshaft
AssigneeLonrho PLC
InventorFrederick M. Stidworthy
Life of this patent
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Abstract
A camshaft arrangement including a pair of cams (7, 8 ) mounted on the same camshaft (1) with at least one of the cams rotatable relative to the camshaft (17) and with the cams (7, 8) maintained at a given axial spacing on the camshaft (1), a differential mechanism (a, b, c, d) coupling the two cams (7, 8) together for rotation about the camshaft axis with a selected relative angular phase, and phase adjusting means (14, 15) for acting on the differential mechanism (a, b, c, d) to effect a relative rotation of the cams (7, 8) to adjust the selected angular phase of the cams (7, 8) and thereafter to retain the cams in the adjusted position.
Claims10
A camshaft arrangement comprising a shaft defining an axis of rotation;
- first and second cams mounted on the shaft for rotation about the axis of rotation, at least one of the first and second cams being rotatable relative to the shaft;
- means maintaining the first and second cams at a given axial spacing on the shaft;
- a coupling axle projecting radially from the shaft and fixed to the shaft for rotation therewith;
- a coupling element rotatably mounted on the coupling axle and engaged with the first and second cams so as to couple with the cams for rotation about the axis of rotation with a selected relative phase;
- and phase adjusting means for adjusting the relative positions of the shaft and the first and second cams to vary the engagement between the coupling element and the first and second cams to vary the selected relative phase of rotation of the first and second cams about the axis of rotation.
Dependencies are inferred from the claim text.