Patent ID: 7344470

Claim:
A multi-speed power transmission comprising: an input shaft; an output shaft; an input planetary gearset having first, second, and third members with said first member including means for connection with a stationary housing and said second member continuously connected with said input shaft; an output planetary gearset having first, second, third, fourth, and fifth members, said third member comprising a planet carrier assembly having rotatably mounted thereon a plurality of pinion gears wherein a first and second of said pinion gears mesh between said first member and said second member and said first and a third of said pinion gears mesh between said fourth member and said fifth member, said second member being continuously connected with said output shaft; wherein said first member of said output planetary gearset is a sun gear, said second member is a ring gear, said fourth member is a sun gear, and said fifth member is a ring gear, and said first pinion gear is a long pinion meshing with said first member and said fifth member; and six selectively operable torque-transmitting mechanisms selectively operable among said planetary gear members to establish at least seven forward speed ratios and one reverse speed ratio between said input shaft and said output shaft wherein: the second and fifth of said torque transmitting mechanisms are selectively engaged to provide the reverse ratio; the first and fifth of said torque transmitting mechanisms are selectively engaged to provide the first forward ratio; the first and sixth of said torque transmitting mechanisms are selectively engaged to provide the second forward ratio; the first and fourth of said torque transmitting mechanisms are selectively engaged to provide the third forward ratio; the first and second of said torque transmitting mechanisms are selectively engaged to provide the fourth forward ratio; the first and third of said torque transmitting mechanisms are selectively engaged to provide the fifth forward ratio; the second and third of said torque transmitting mechanisms are selectively engaged to provide said sixth forward ratio; and the third and fourth of said torque transmitting mechanisms are selectively engaged to provide said seventh forward ratio.