Patent ID: 6379274
Filing Date: 2002-04-30
Classification: F16H

Abstract:
A driven pulley for use in a continuously variable transmission, the driven pulley being coaxially mountable around a main shaft and comprising:a first flange having a conical wall on one side thereof; a second flange coaxial with the first flange and having opposite first and second sides, the first side being provided with a conical wall facing the conical wall of the first flange to form a drivebelt-receiving groove in which a drivebelt is to be partially wound, the second flange being at least axially movable with reference to the first flange; a first radially-extending support coaxial with the first and the second flange, the first support being at a fixed axial distance from the first flange and facing the second side of the second flange; at least two inclined first cam surfaces that are substantially identical and symmetrically-disposed on one among the second side of the second flange and the first support; first cam followers symmetrically connected to other one among the second side of the second flange and the first support, each first cam follower being engageable with a respective one of the first cam surfaces; at least two inclined second cam surfaces that are substantially identical and symmetrically-disposed on the second side of the second flange, the second cam surfaces having an inverted inclination with reference to the first cam surfaces; a second radially-extending support coaxial with the first and the second flange, the second support being at a fixed coaxial distance from the first flange; a biasing element elastically interconnecting the first support and the second support; and means for connecting the first support to the main shaft in a torque-transmitting engagement.