Patent ID: 6663529
Filing Date: 2003-12-16
Classification: F16H

Abstract:
A planetary transmission comprising:an input clutch; an input shaft drivingly connected with said input clutch; an output shaft; a first planetary gearset having at least three members including a first member, a second member, and a third member; a second planetary gearset having at least three members including a first member, a second member, and a third member; a first synchronizer clutch selectively connecting said input shaft individually with said first member and said second member of said first planetary gearset; a second synchronizer clutch selectively connecting said first member and said second member of said first planetary gearset with an output portion of said first planetary gearset; a third synchronizer clutch drivingly connected with said second synchronizer clutch and being effective to interconnect each of said members of said second planetary gearset with said second synchronizer clutch; a fourth synchronizer clutch selectively manipulable to engage said first and said second members of said second planetary gearset with a stationary component of said transmission; a fifth synchronizer clutch selectively manipulable to connect said second member of said second planetary gearset and said third member of said second planetary gearset with said output shaft; and said synchronizer clutches being selectively engageable in a plurality of combinations to establish at least six forward speed ratios and one reverse speed ratio through said planetary gearsets between said input shaft and said output shaft.