| 摘要 |
An epicyclic gear train comprising a sun gear, a plurality of planet gears meshing with the sun gear and carried from a carrier rotatable about the sun gear axis, and an annulus gear conical with the sun gear and meshing with the planet gears, each of the gears having single helical teeth and the sun and annulus gears being axially displaced to reduce the tipping couple on the planet gears, drive being taken from or to the planet carrier solely on a plane or planes perpendicular to the rotational axis of the carrier and lying between the engagements between the planet gears and the sun gear, and the planet gears.
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