Patent ID: 7063633
Filing Date: 2006-06-20
Classification: F16H

Abstract:
1. A driving pulley for a continuously variable transmission, the driving pulley being coaxially mountable around a main shaft and rotatable at a variable rotation speed, the driving pulley comprising: a first flange having opposite first and second sides, the first side being provided with a conical wall; a second flange coaxial with the first flange and having a conical wall facing the conical wall of the first flange to form a drivebelt-receiving groove around which a drivebelt is wound, the second flange being axially movable with reference to the first flange; first means for connecting the first flange to the main shaft in a torque-transmitting engagement; second means for connecting the second flange to the main shaft in a torque-transmitting engagement; a positive assembly comprising: fourth means for generating a return force urging the second flange to move away from the first flange; a negative assembly comprising: seventh means for generating a return force urging the negative carriage away from the first flange.