Patent ID: 6056661
Filing Date: 2000-05-02
Classification: F16H

Abstract:
A continuously variable powertrain comprising:power input means for delivering power to the powertrain;power output means for delivering power from the powertrain;a planetary gear set having a first member selectively connectable with said power input means, a second member and a third member;a continuously variable transmission unit having a first variable member and a second variable member;a first transfer gear mechanism drivingly connected between said second member and said first variable member;a second transfer gear mechanism drivingly connected between said third member and said second variable member;an output transfer gear mechanism drivingly connected with said power output means;a first clutch mechanism for selectively connecting said first transfer gear mechanism to said output transfer gear mechanism to establish a reverse drive range in said powertrain;a second clutch mechanism for selectively connecting said first transfer gear mechanism with said output transfer gear mechanism to establish a first forward drive range in said powertrain;a third clutch mechanism for selectively connecting said second transfer gear mechanism with said output transfer gear mechanism to establish a second forward drive range; anda fourth clutch mechanism for selectively connecting said second member with said power output means for establishing a third forward drive range, said second variable member being operable to transmit power from said second transfer gear mechanism through said first variable member to said first transfer gear mechanism during the third forward drive range.