DRIVEN PULLEY Russian patent published in 2004 - IPC

FIELD: infinitely variable gearboxes.

SUBSTANCE: proposed driven pulley mounted coaxially relative to dive shaft 12 consists of two opposite taper flanges: first flange 14 and second flange 18 directed towards each other. Circular cam plate 40 is coaxially connected with side of flange 18 which is opposite to flange 14. Cam plate 40 has two first inclined cam friction surfaces 42 and two second cam inclined friction surfaces 44 whose inclination is reversal relative to first friction surfaces 42. First radial support 50 running radially is provided with group of first cam follow-up members 54. First support 50 is located at fixed distance from first flange 14 and each member of first follow-up members 54 of cam is thrown into engagement with respective one surface of first cam friction surfaces 42. Second radial support 60 is provided with group of second follow-up members of cam. Second support 60 is also located at fixed distance from first flange 14 and each member of second follow-up members 64 is thrown into engagement with respective one cam friction surface 44. Spiral spring 70 are mounted between first support and 50 and second support 60.

EFFECT: possibility of adjusting reversal force of springs and clamping effort on drive belt.

15 cl, 13 dwg