| 摘要 |
<p>A plurality of substantially axially aligned gear trains (10 - 12) each has an input sun gear (13) and two output ring gears (15 and 16 or 17), the output ring gears being relatively rotatable in response to rotation of the sun gear (13). Adjacent ends of the sun gears (13) are drivingly coupled by dogs (33) which permit limited axial misalignment between the gear trains (10 - 12). The teeth of planet pinions (18, 19, 20) between the sun gear (13) and the ring gears (15,16,17) are formed so as to have cross-sections which reduce in direction away fromthe median cross-sections (P) of the pinions (18, 19, 20). Adjacent ends of the ring gears (15 and 16 or 17) are spaced apart to permit limited axial misalignment.</p> |
