Patent ID: 8257211
Filing Date: 2012-09-04
Classification: F16D,F16F,F16H

Abstract:
1. A pulley assembly for a flexible motor vehicle transmission, comprising a supporting member in the form of a hub that is rotatable about an axis (A), a pulley adapted to cooperate with a belt and connected to said hub to be rotatable about said axis (A), an elastic spiral device interposed between the hub and the pulley and including a sliding portion elastically loaded in a radial direction against a sliding wall carried by one of the hub or pulley thereby forming a radially directed drive force coupling the pulley to the hub, wherein the elastic spiral device further includes a supporting portion having first and second, angularly spaced apart runner devices attached thereto which will apply radial loads to, slide along and be in direct contact with said sliding wall, the elastic spiral device having a leading end with the first runner device being attached to said leading end, the first runner device further including a narrowed leading end, said pulley assembly further including a pair of spaced apart abutting elements fixed to the sliding wall which will receive the narrowed leading end there between be contacted by the first runner device at a stopped position with respect to said sliding wall.