Abstract: Planetary gearing comprising a stationary support, an outer housing rotatably suspended from the support, the housing including internal gear teeth and being adapted to contain a lubricant, the stationary support including an inner portion extending within the housing, a driving gear rotatably mounted within the inner stationary support portion and housing, satellite gear means rotatably mounted on the inner stationary support portion and coupling the driving gear with the housing internal gear teeth, a first bearing rotatably coupling the housing with the stationary support, the first bearing being enclosed within the housing above the level of lubricant to be contained in the housing, and a second bearing mounted on the inner stationary support enclosed within the housing.

Abstract: Multiple pinion concentric drive with a gear of large diameter fixed on a driven shaft having disposed before each drive pinion and connected thereto a rotatable drive gearing unit which in turn is connected with a distributor gearing for driving the rotatable drive gearing unit, which latter has an outer concentric wheel pivoting on its bearing support and its reaction moment acting against an elastic member such as a hydraulic piston cylinder unit. The elastic support of the reaction moments of outer concentric wheels has among other advantages, the advantage that no reaction moments of different magnitude can occur and thus all transmitted power components in the individual power branches driving each drive pinion are of equal magnitude.