Patent ID: 7008347
Filing Date: 2006-03-07
Classification: F16H

Abstract:
1. 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 second member of said second planetary gear set; a first interconnecting member continuously interconnecting said first member of said second planetary gear set with said second member of said third planetary gear set; a second interconnecting member continuously interconnecting said third member of said second planetary gear set with said third member of said third planetary gear set; said third member of said first planetary gear set being continuously connected with a stationary member; a first torque-transmitting mechanism selectively interconnecting said first member of said first planetary gear set with said first 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 first member of said second planetary gear set; a third torque-transmitting mechanism selectively interconnecting said second member of said first planetary gear set with said second member of said third planetary gear set; a fourth torque-transmitting mechanism selectively interconnecting said second member of said first planetary gear set with said first member of said third planetary gear set; a fifth torque-transmitting mechanism selectively interconnecting said second member of said third planetary gear set with said stationary member; and a sixth torque-transmitting mechanism selectively interconnecting said third member of said third planetary gear set with said stationary member; wherein said six torque-transmitting mechanisms are engaged in combinations of two to provide at least one reverse speed ratio and six forward speed ratios.