Patent ID: 7674201
Filing Date: 2010-03-09
Classification: F16H

Abstract:
1. A multi-speed transmission comprising: an input shaft; an output shaft; first, second and third gear sets each having first, second and third members; said input shaft being continuously interconnected with at least one member of said gear sets, and said output shaft being continuously interconnected with another member of said gear sets; a first interconnecting member continuously connecting said first member of said first gear set with said first member of said second gear set; a second interconnecting member continuously connecting said second member of said second gear set with said first member of said third gear set; a third interconnecting member continuously connecting said second member of said first gear set with said second member of said third gear set; a first torque-transmitting mechanism selectively connecting said first interconnecting member with a stationary member; a second torque-transmitting mechanism selectively connecting a member of said first gear set with said stationary member; a third torque-transmitting mechanism selectively connecting a member of said third gear set with said stationary member; a fourth torque-transmitting mechanism selectively connecting a member of said first gear set with a member of said first, second or third gear set which is continuously connected with said input member; a fifth torque-transmitting mechanism selectively connecting said first or second interconnecting member with a member of said first, second or third gear set which is continuously connected with said input member; a sixth torque-transmitting mechanism selectively connecting a member of said first or third gear set with one of said interconnecting members; a seventh torque-transmitting mechanism selectively connecting a member of said third gear set with said third interconnecting member; and wherein said six torque-transmitting mechanisms are engaged in combinations of two to establish at least seven forward speed ratios and at least one reverse speed ratio between said input shaft and said output shaft.