Patent Number: 6,308,669

Title: Phase change coupling

Abstract: A phase change coupling is disclosed for allowing the angular position of a drive member 10 of a camshaft 12 to be varied in relation to the camshaft. The coupling is additionally provided with a locking mechanism for preventing rotation of the drive member relative to the camshaft in only one direction during cranking of the engine, so that, during cranking of the engine, the drive member 10 is rotated in only one sense relative to the camshaft by the camshaft torque reversals until it reaches a predetermined start-up angular position.

Inventors: Lancefield; Timothy Mark (Bicester, GB), Methley; Ian (Witney, GB)

Assignee: Mechadyne PLC

International Classification: F01L 1/344 (20060101); F01L 1/34 (20060101); F01L 001/34 ()

Expiration Date: 10/30/2018