Patent ID: 6948396
Filing Date: 2005-09-27
Classification: F16H,Y10T

Abstract:
1. A control apparatus for a power transmission having a plurality of selectively engageable friction devices said control apparatus comprising: a torque-to-thrust mechanism for each of said selectively engageable friction devices, each of said torque-to-thrust mechanisms having a rotary input mechanism; a first drive means for selectively rotating each of said rotary input mechanisms, said first drive means including a plurality of control input mechanisms adapted to rotate respective ones of said rotary input mechanisms, a first shaft supporting each of said control input mechanisms, selectively engageable clutch means for selectively individually connecting each of said control input mechanisms with said first shaft, selectively engageable brake means for selectively individually connecting each of said control means with a stationary housing, and a first electric motor drivingly connected with said first shaft for selectively rotating said first shaft; a second drive means for selectively rotating each of said rotary input mechanisms, said second drive means including a plurality of control input mechanisms adapted to rotate respective ones of said rotary input mechanisms, a second shaft supporting each of said control input mechanisms, selectively engageable clutch means for selectively individually connecting each of said control input mechanisms with said second shaft, and a second electric motor drivingly connected with said second shaft for selectively rotating said second shaft; and said first drive means being operable to control an on-coming one of said selectively engageable friction devices and said second drive means being operable to control an off-going one of said selectively engageable friction devices to accomplish a ratio interchange within said power transmission.