Patent ID: 8480533

Claim:
A multi-speed transmission, comprising: an input member and an output member disposed in a stationary housing; a first planetary gear set, a second planetary gear set, a third planetary gear set, and a fourth planetary gear set, each of the first, second, third, and fourth planetary gear sets disposed in the stationary housing and including a sun gear, a planet carrier, and a ring gear; a first intermediate coupling member continuously connecting the ring gear of the first planetary gear set with the sun gear of the second planetary gear set; a second intermediate coupling member continuously connecting the ring gear of the second planetary gear set with the sun gear of the third planetary gear set; a third intermediate coupling member continuously connecting the planet carrier of the third planetary gear set with the ring gear of the fourth planetary gear set; a fourth intermediate coupling member continuously connecting the sun gear of the third planetary gear set with the sun gear of the fourth planetary gear set; and six torque control elements operably coupled to the planetary gear sets and selectively engageable to create a set of different gear ratios between the input member and the output member, the set of different gear ratios including at least nine forward gear ratios and at least two reverse gear ratios.