Patent ID: 6780138
Filing Date: 2004-08-24
Classification: F16H

Abstract:
A multi-speed planetary transmission comprising:an input shaft; an output shaft; a transmission housing; a first planetary gearset having a first member, a second member, and a third member; a second planetary gearset having a first member, a second member, and a third member; a third planetary gearset having a first member, a second member, and a third member; a first interconnecting member continuously interconnecting said first member of said first planetary gearset with said first member of said second planetary gearset; a second interconnecting member continuously interconnecting said second member of said first planetary gearset with said first member of said third planetary gearset; a third interconnecting member continuously interconnecting said second member of said second planetary gearset with said second member of said third planetary gearset; said input shaft being continuously interconnected with at least one member of one of said planetary gearsets; said output shaft being continuously interconnected with at least one member of said planetary gearsets that is not connected with said input shaft; five torque transmitting mechanisms including a first selectively engageable stationary torque transmitting mechanism, a second selectively engageable stationary torque transmitting mechanism, and first, second, and third selectively engageable rotating torque transmitting mechanisms; and said five torque transmitting mechanisms being selectively engaged in combinations of two to establish at least six forward speed ratios and one reverse speed ratio between said input shaft and said output shaft.