IMPACT DES INGALITS SUR LA CROISSANCE : LE RLE DES RATIONNEMENTS FINANCIERS

A spring assembly 12 for an electromagnetic actuator 10 is provided. The actuator 10 has an armature 18 mounted for movement between two electromagnets 14 and 16 and a shaft 22 operatively associated with the armature. The spring assembly 12 includes a housing 34 having a surface feature 52 therein and is coupled to the actuator. A helical spring 32 is disposed in the housing 34 so as to be compressed and allowed to expand. The spring 32 has first and second ends with the second end biasing the shaft 22. A spring retainer 38 engages the first end of the spring 32. The spring retainer 38 has a surface feature 48 therein. A ball bearing 40 is received by the surface feature 52 of the housing 34 and the surface feature 48 of the spring retainer 38. When the spring 32 is compressed and then expanded, torque produced by the spring 32 is transferred to the ball bearing 40 which rotates with respect to the housing 34, permitting the first end of the spring to rotate while substantially preventing torque from being transferred from the spring 32 to the shaft 22 and armature 18.