Patent ID: 8127728
Filing Date: 2012-03-06
Classification: F01L

Abstract:
1. A camshaft phaser for selectively varying the phase of a camshaft with respect to a crankshaft in an internal combustion engine, comprising: a) a stator; b) a rotor disposed within said stator; c) a cover plate associated with said stator and enclosing said rotor within said stator; d) a spring guide extending from said cover plate; e) a coil bias spring disposed about said spring guide and having first and second tangs; and f) a spring retainer associated with said rotor, wherein said first tang is fixed to move with said stator, wherein said second tang is in contact with said spring retainer, and wherein said second tang is engaged with a wall of a slot in said spring retainer, said second tang being engaged with said wall at all phase angles less than zero and being disengaged from said wall at all phase angles greater than zero.