| 摘要 |
A toothed gearing group comprising two concentric twin shafts, an inner one and an outer one, respectively, a main gear for each twin shaft which is rigid in rotation therewith, a solitary shaft which has a first coupling gear in in meshing engagement with the main gear of the inner or outer shaft, and a second coupling gear, and at least one intermediate shaft rigid in rotation with two coupling gears in meshing engagement with the second coupling gear of the solitary shaft and with the main gear of the inner or outer shaft, respectively. |
