BALL DISC VARIABLE-SPEED DRIVE Russian patent published in 2001 - IPC

FIELD: mechanical engineering. SUBSTANCE: variable-speed drive has a body containing driving shaft, driving shaft disc, other disc, separator with radial recesses where balls are arranged, driven shaft, and drive for ventilation of rotational speed of other disc or for keeping it in the same position. Closed recess of other disc is shaped as shortened hypotrochoid with even number of vertices. Closed recess of driving shaft disc is made in the form of shortened hypotrochoid with a number of vertices reduced by half. Number of recesses on separator corresponds to number of hypotrochoid vertices on driving shaft disc. EFFECT: enhanced efficiency. 1 dwg