GEAR VARIATOR Russian patent published in 2008 - IPC F16H47/04 

FIELD: engines and pumps.

SUBSTANCE: invention refers to devices for stepless converters of torque and rotary motion. A gear variator contains two differential mechanisms (1, 2), two reducers (3, 4) with different ratios. One of the shafts of each reducer is connected to a hydro pump (11) equipped with an adjustable valve. Two differential mechanisms and two reducers are arranged so that input shafts of the reducers are at the same time half axes of the first differential mechanism, while output shafts of reducers are half axes of the second differential mechanism. The differential allows distribution of rotation between half axes within range from zero to a speed of a drive shaft on one of the half axes which corresponds to interval from the speed of the drive shaft to zero on the other half axis. A rotation speed of the variator driven shaft can be adjusted by means of adjustable valves through which liquid is pumped by gear oil pumps driven with specified shafts of the mechanism.

EFFECT: variator allows to change value of torque within any given range.

2 dwg