Patent ID: 6468176
Filing Date: 2002-10-22
Classification: F16H

Abstract:
A method of adjusting progressiveness of a change from an old transmission ratio to a new transmission ratio, in a transmission device comprising:a device for selective coupling between two rotary members; a force generator means for urging the selective coupling means towards a predetermined one of its slipping and gripping states, corresponding to the new ratio; an actuating means capable of urging the selective coupling means towards the other of the said states, corresponding to the old ratio; wherein the method comprises, starting from a condition in which said coupling means is in said other state whilst being urged by said force generator means towards said predetermined state, letting said coupling means being actuated into said predetermined state by said force generator means whilst maintaining unaltered operating conditions of said force generator means, and controlling the actuating means so that said actuating means produces an actively modulated resistant force, slowing down the transition between the old ratio and the new ratio.