Patent ID: 7063058
Filing Date: 2006-06-20
Classification: F01L

Abstract:
1. A vane-type camshaft phaser for varying the timing of combustion valves in an internal combustion engine, comprising: a stator having a plurality of angularly spaced-apart lobes extending inwards defining a cavity therewithin; a rotor disposed within said stator cavity and having a plurality of vanes equal in number to the number of said plurality of lobes extending outwards of a rotor hub, said vanes being interspersed with said stator lobes to define a plurality of alternating rotor-advancing and rotor-retarding chambers, one of said plurality of rotor vanes being larger than any of the other rotor vanes; a first fixed stop associated with said rotor and being aligned with one of said plurality of stator lobes adjacent said larger rotor vane; a second fixed stop associated with said stator and being generally diametrically opposed to said first fixed stop; a coiled spring having a first tang and a second tang, wherein said first tang is axially spaced apart from said second tang, wherein said first tang is grounded to said first fixed stop, and wherein said second tang is grounded to said second fixed stop.