Patent ID: 6663528
Filing Date: 2003-12-16
Classification: F16H

Abstract:
A power transmission comprising;an input shaft; an output shaft; a first selectively engageable input clutch; a second selectively engageable input clutch; a planetary gear arrangement comprising: at least six rotatable planetary members; a first synchronizer clutch selectively engaging said first selectively engageable input clutch with each of a first and second of said rotatable planetary members individually a second synchronizer clutch selectively engaging said second selectively engageable clutch with each of a third and a fourth of said rotatable planetary members individually a third synchronizer clutch selectively connecting said output shaft with each of said fourth and a fifth of said rotatable planetary members individually a fourth synchronizer clutch selectively connecting a ground member with each of said second and a sixth of said rotatably planetary members individually and said first and second selectively engageable input clutches and said four synchronizer clutches being engaged in a plurality of combinations to establish seven forward speed ratios and one reverse speed ratio between said input shaft and said output shaft.