Patent ID: 7217209
Filing Date: 2007-05-15
Classification: F16G,F16H

Abstract:
1. A continuously variable transmission, comprising: a drive pulley having a fixed pulley half and a movable pulley half; a driven pulley having a fixed pulley half and a movable pulley half; and a metal belt having: wherein the metal belt is wound around the drive pulley and the driven pulley, wherein the fixed pulley half of the drive pulley and the fixed pulley half of the driven pulley are disposed in diagonal positions relative to each other, and wherein the movable pulley half of the drive pulley and the movable pulley half of the driven pulley are in diagonal positions relative to each other, wherein the movable pulley half of the drive pulley has a flexural stiffness higher than a flexural stiffness of the fixed pulley half of the drive pulley, wherein each metal element comprises: wherein a clearance (β) is defined between an inner edge of the metal ring assembly and the neck portion of the each metal element, and wherein a stiffness ratio (Km/Ks) of the movable pulley half with respect to the fixed pulley half is equal to or more than 1.56.