Patent ID: 7014590

Claim:
A multi-speed transmission comprising: an input shaft; an output shaft; a planetary gear arrangement having first, second and third planetary gear sets, each planetary gear set having first, second and third members; said input shaft being continuously interconnected with said first member of said first planetary gear set, and said output shaft being continuously interconnected with said first member of said third planetary gear set; said first member of said second planetary gear set being integrally connected with said first member of said third planetary gear set; and said third member of said first planetary gear set being continuously connected with a transmission housing; an interconnecting member continuously interconnecting said second member of said second planetary gear set with said second member of said third planetary gear set; a first torque-transmitting mechanism selectively interconnecting said second member of said first planetary gear set with said third member of said third planetary gear set; a second torque-transmitting mechanism selectively interconnecting said first member of said first planetary gear set with said third member of said third planetary gear set; a third torque-transmitting mechanism selectively interconnecting said third member of said second planetary gear set with said transmission housing; a fourth torque-transmitting mechanism selectively interconnecting said second member of said first planetary gear set with said third member of said second planetary gear set; a fifth torque-transmitting mechanism selectively interconnecting said first member of said first planetary gear set with said second member of said third planetary gear set; a sixth torque-transmitting mechanism selectively interconnecting said second member of said second planetary gear set with said transmission housing; and said first, second, third, fourth, fifth and sixth torque-transmitting mechanisms being engaged in combinations of two to establish seven forward speed ratios and a reverse speed ratio between said input shaft and said output shaft.