| 摘要 |
A rotary transmission system comprises a first planetary gear set (18, 20-22) driven by a rotary input shaft (14), a second planetary gear set (24-26, 44) driven by the first gear set, and a third planetary gear set (41-44) driven by the second gear set. An output shaft (45) is driven by the sun gear (43) of the third planetary gear set, and means (28) are provided for rotating the sun gear (26) of the second planetary gear set to vary the gear ratio of the transmission system. |
