PLANETARY GEAR BOX Russian patent published in 2011 - IPC F16H3/66 

FIELD: machine building.

SUBSTANCE: planetary gear box consists of interconnected sun gears (5), carriers (2, 3) of first and second step with satellites, of crown gears (6) of first and second steps rigidly interconnected and connected to external rim (7). Output shaft (4) is connected with carrier (3) of the second step. First friction mechanism (8) in a closed position prevents rotation of carrier (2) of the first step relative to case (1). Second friction mechanism (9) in a closed position prevents rotation of carrier (2) of the first step relative to crown gears (6). Third friction mechanism (10) in a closed position prevents rotation of sun gears (5) of the first step relative to case (1).

EFFECT: raised efficiency and reliability of gear box in operation.

1 dwg