Hydromechanical transmission

A hydromechanical transmission including a hydrostatic axial piston motor having a swash plate, a cylindrical drum, work cylinders located in said cylindrical drum and a driven shaft, at least a single-stage planetary gear axially adjacent to and coaxial with said piston motor, said planetary gear having a rotary hub radially surrounding said planetary gear and said axial piston motor, said rotary hub having an annular inner surface and a ring gear located at said annular inner surface of said rotary hub, a stationary hub support member, said stationary hub support member having an axial cavity formed therein to receive said axial piston motor and said axial piston motor mounted within said cavity coaxial with said rotary hub, said cavity having an end wall forming a control surface for said axial piston motor, a plurality of pressure medium channels formed in said stationary hub support, each of said pressure medium channels having an inlet end and an outlet end, said outlet ends opening on said control surface for connection with said work cylinders in said cylindrical drum.