Patent ID: 6976933

Claim:
A power transmission comprising: an input shaft; an output shaft; a first planetary gearset having a sun gear member, a ring gear member, and a planet carrier assembly member; a second planetary gearset having a sun gear member, a ring gear member, and a planet carrier assembly member; six mechanical torque-transmitting mechanisms that are selectively engageable in a plurality of combinations of a plurality of said six mechanical torque-transmitting mechanisms to establish at least ten forward speed ratios and at least one reverse speed ratio between the input shaft and the output shaft six mechanical torque-transmitting mechanisms that are selectively engageable in a plurality of combinations to establish at least ten forward speed ratios and a least one reverse speed ratio between the input shaft and the output shaft; a first of said torque-transmitting mechanisms being selectively connectible between said input shaft and each of said members of said first planetary gearset; a second of said torque-transmitting mechanisms being selectively connectible between the ring gear member and planet carrier member of the first planetary gearset with a third of the torque-transmitting mechanisms; said third of said torque-transmitting mechanisms being selectively connectible with each of said members of said second planetary gearset; a fourth of said torque-transmitting mechanisms being selectively connectible between the planet carrier member and sun gear member of said second planetary gearset and a transmission housing; a fifth of said torque-transmitting mechanisms being selectively connectible between said planet carrier member and said ring gear member of said second planetary gearset and said transmission output shaft; and a sixth of said torque-transmitting mechanisms being selectively connectible between said sun gear member and said planet carrier member of said first planetary gearset and said transmission housing.