Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Ian Methley0
Date of Patent
March 2, 2010
0Patent Application Number
117882440
Date Filed
April 18, 2007
0Patent Primary Examiner
Patent abstract
Hydraulically operated camshaft phasers are described which comprise a drive member and a driven member having a fixed range of angular adjustment and a means for mechanically locking the position of the driven member relative to the drive member when there is insufficient hydraulic pressure to operate the phaser. In the invention, the lock operates in an intermediate position within the range of adjustment, and a hydraulic circuit is provided for biasing the phaser towards the intermediate position for the lock to engage.
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