Patent ID: 6709358
Filing Date: 2004-03-23
Classification: F16H

Abstract:
A multi-speed transmission comprising:an input shaft; an output shaft; first, second, and third planetary gear sets each having first, second, and third members; said input shaft being continuously interconnected with said first or third member of said first planetary gearset, or one of said members of said second or third planetary gear sets, said output shaft being continuously interconnected with another one of said members of said planetary gear sets that is not continuously interconnected with said input shaft; a first interconnecting member continuously interconnecting said first member of said first planetary gear set and said first member of said second planetary gear set; a second interconnecting member continuously interconnecting said second member of said second planetary gear set and said first member of said third planetary gear set; a stationary transmission housing continuously connected with said second member of said first planetary gear set; a first torque transmitting mechanism selectively interconnecting said transmission housing with one of said first interconnecting member, said third member of said first planetary gearset, said third member of said second or third planetary gearsets, that is not continuously interconnected with said input shaft or said output shaft; a second torque transmitting mechanism selectively interconnecting said third member of said first planetary gear set with either said input shaft, said output shaft, said third member of said second planetary gear set, or said second member of said third planetary gear set; a third torque transmitting mechanism selectively interconnecting said first or third member of said first planetary gearset, or said third member of said second planetary gear set with, one of said members, of said third planetary gear set, said members interconnected by said third torque-transmitting mechanism being different from at least one of the members interconnected by said second torque-transmitting mechanism; a fourth torque transmitting mechanism selectively interconnecting said first or third member of said first planetary gear set, or said third member of said second planetary gear set with either said second or third member of said third planetary gear set said members interconnected by said fourth torque-transmitting mechanism being different from at least one of the members interconnected by said second or third torque-transmitting mechanism; a fifth torque transmitting mechanism selectively interconnecting one of said members of said third planetary gear set with either said first interconnecting member, said third member of said first planetary gear set, said third member of said second planetary gear set, or another member of said third planetary gear set, said members interconnected by said fifth torque-transmitting mechanism being different from at least one of the members interconnected by said second, or third, or fourth torque-transmitting mechanism; and said torque transmitting mechanisms being engaged in combinations of two to establish at least six forward speed ratios and a reverse ratio between said input shaft and said output shaft.