Patent ID: 6960147

Claim:
A planetary gear comprising a rotatably mounted sun wheel, at least three planet wheels arranged around the sun wheel which are rotatable about their own axes, and having peripheral surfaces in a form of surfaces of revolution, means for resiliently pressing the peripheral surfaces of the planet wheels into force-transferring engagement with a peripheral outer face of the sun wheel, at least one and maximum two of the at least three planet wheels ( 12 ) mounted for rotation on a corresponding stay ( 7 ) such that the at least one and maximum two axes of rotation are substantially fixed relative to an axis of rotation of the sun wheel ( 2 ), at least one other of said at least three planet wheels ( 6 ) being arranged on a stay ( 7 ) extending with a predetermined play into a central bore provided in said at least one other of said at least three planet wheels, such that a radial distance between a center line of the stay ( 7 ) and the axis of rotation of the sun wheel ( 2 ) is smaller by a predetermined value than a corresponding radial distance between a center line of said at least one other planet wheel ( 6 ) and the axis of rotation of the sun wheel ( 2 ) when the planetary gear is in an operational state, in which all the planet wheels ( 6 , 12 ) are in engagement with the sun wheel ( 2 ), and each of the stays is in engagement with an inner surface of a corresponding bore.