Patent ID: 6280357
Filing Date: 2001-08-28
Classification: F16H

Abstract:
A continuously variable transmission (1) comprising:an adjustable pulley assembly (7) comprising two sheaves (8, 9) on a pulley shaft (6),at least one sheave (8) being axially movable with respect to the pulley shaft (6) by a hydraulically operated movement means,said movement means comprisinga piston/cylinder assembly (22; 26, 27, 29) provided with a piston (26) and a cylinder (27) fixed to the axially movable sheave (8) for generating a first force acting on the movable sheave (8), anda centrifugal pressure compensating means for generating a second force acting on the movable sheave (8) in a direction opposite with respect to said first force,said centrifugal pressure compensating means comprisinga further cylinder (33, 33'), fixed to the axially movable sheave (8) in a radial direction outward of the piston/cylinder assembly (22; 26, 27, 29), anda further piston (32), fixed to the pulley shaft (6),said further piston (32) and said further cylinder (33, 33') forming a further piston/cylinder assembly.