TOOTHED BELT PULLEY AND SYSTEM Russian patent published in 2016 - IPC F16H55/36 

FIELD: machine building.

SUBSTANCE: invention relates to belt gears. Toothed pulley system comprises first toothed pulley (100) containing multiple first transverse teeth (101) extending parallel to rotation axis (A-A) and having the first step (P1). First toothed pulley additionally comprises multiple second transverse teeth (102) having the second step (P2) and located directly near the first teeth. Second teeth are parallel to the first teeth, herewith a tooth of the said first teeth is aligned with radius (A) of the said first toothed pulley. Tooth of the said second teeth is shifted to distance (x) from said radius (A), wherein (x) is greater than zero. Between the first and the second transverse teeth there is radially extending wheel flange (10). First teeth can have diameter (D), which is not equal to diameter of the second teeth. System includes second toothed pulley (200), first (300) and second (400) toothed belts tensioned between the pulleys.

EFFECT: provided is decreased noise of the gear.

14 cl, 13 dwg