Patent ID: 6290620
Filing Date: 2001-09-18
Classification: F16H

Abstract:
A continuously variable transmission for transferring drive from an engine to a device to be driven, the transmission comprisinga primary pulley for receiving drive from an engine,a belt,a secondary pulley which is coupled over the belt to the primary pulley for transferring drive to a device to be driven, the primary and secondary pulleys each having an axially movable sheave and a hydraulically operated actuator therefor to effect ratio change of the transmission and to maintain belt tension,a single source of constant hydraulic pressure operatively connected for driving each of the actuators, anda damper element selected from the group consisting of a torsional spring damper and an elastomer damper between the device to be driven and an output shaft of the secondary pulley of the continuously variable transmission for introducing a time lag in the transmission of torque between the device to be driven and the output shaft of the secondary pulley of the transmission in response to a sudden load change.