Full Title

Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution (control of exclusively fluid gearing F16H61/38) > with liquid motor and pump combined in one unit > pump and motor being of the same type > each with one main shaft and provided with pistons reciprocating in cylinders > with cylinders arranged around, and parallel or approximately parallel to the main axis of the gearing