Patent ID: 7428852

Claim:
A system for actuating couplers to produce gear changes in a transmission for a motor vehicle comprising: a first electric motor having an axis of rotation; a second electric motor aligned axially with said axis; first actuator drums supported for rotation transverse to said axis and driveably connected to the first electric motor; first shift forks, each first shift fork driveably connected to one of the first actuator drums and supported for displacement transverse to said axis in response to rotation of a first actuator drum between a neutral state, wherein no gear is engaged, and at least one first drive state, wherein a gear of a first gear group is engaged; second actuator drums supported for rotation transverse to said axis and driveably connected to the second electric motor; second shift forks, each second shift fork driveably connected to one of the second actuator drums and supported for displacement transverse to said axis in response to rotation of a second actuator drum between a neutral state, wherein no gear is engaged, and at least one second drive state, wherein a gear of a second gear group is engaged.