Patent ID: 8262535

Claim:
A planetary gear train comprising: a central sun gear; three or more planet gears arranged around the central sun gear in a radial plane wherein the planet gears mesh with the central sun gear; each planet gear being mounted on both sides axially at the front and back of a gear body in a roller bearing, each planet gear having a flexurally elastic axis projecting axially on both sides beyond the gear body, the connection between an inner ring of each roller bearing and an appertaining axis being configured to be spherically moveable; an annulus surrounding and meshing with the planet gears; a planet gear carrier on which the planet gears are mounted, the planet gear carrier having two axially spaced bearing washers that support the roller bearing and three or more webs that connect the bearing washers, each roller bearing being configured as a single-row or multi-row cylindrical roller bearing; the sun gear providing input and the annulus providing output when the planet gear carrier is held stationary, or the sun gear providing input and the planet gear carrier providing output when the annulus is held stationary.