A gearwheel (4a,4b) includes circumferential stop structures (9a,9b,10a,10b) that engage the sides of the teeth of the other gearwheel (5a,5b). An Independent claim is also included for a differential transmission.

A housing (10) has a planetary gear mechanism (20) composed of an inner gear (21), a planetary gear (22) and a sun gear (23), which mechanism is disposed within the housing (10) on its outer periphery side. The inner gear (21) is connected with a casing (3...

The gear noise reduction measures is simplified as well as the optional setting alteration of the total gear ratio on the engine side is enabled without altering the mutual positions between axes A hybrid drive apparatus is formed from an engine (E/G), a g...

A hybrid vehicle controls operation of an engine, a generator and a motor to retain driving comfort. The engine and the generator are connected through a planetary gear unit to a drive shaft, and the output of the engine 1 is split between the generator an...