Transmission of the toroidal-race, rolling-traction type having a mixer and a reducer epicyclic type gearing with clutches brakes

A CVT (continuously-variable-ratio transmission) having a coaxial input (from 6) and output (17) and that selectively operates in at least first, second and third regimes, said CVT comprising in combination a toroidal-race rolling-traction type ratio-varying variator, and a gearing arrangement comprising both a speed reducing gear unit (10) and a mixing epicyclic type gear unit (15),

• wherein the mixing epicyclic type gear unit includes first engagement means (20) that selectively locks the mixing epicyclic type gear unit components (18, 25, 16) so that they rotate as one in at least one of the first and second regimes, and so that a direction of rotation of an output member (26) of the speed reducing gear unit (10) and an input (1) of the speed-reducing gear unit are the same;
• and
• second (13) engagement means are associated with the reducing gear unit, in that the second and first engagement means respectively and selectively engage the CVT in first and second regimes, and in that a third engagement means (48) selectively engages the CVT in a third regime.

A CVT (continuously-variable-ratio transmission) having a coaxial input (from 6) and output (17) and that selectively operates in at least first and second regimes, said CVT comprising in combination:

• a toroidal-race rolling-traction type ratio-varying variator (2) having an operating axis (5) that is displaced from but parallel to the common axis of the input and output of the CVT, and
• a gearing arrangement comprising both a speed reducing gear unit (10) and a mixing epicyclic type gear unit (15),
• wherein the mixing epicyclic type gear unit includes first engagement means (20) that selectively locks the mixing epicyclic type gear unit components (18, 25, 16) so that they rotate as one in at least one of the first and second regimes, and so that a direction of rotation of an output member (26) of the speed reducing gear unit (10) and an input (1) of the speed-reducing gear unit are the same.