EXPANDING PULLEY Russian patent published in 2012 - IPC F16H7/02 F16H55/36 

FIELD: machine building.

SUBSTANCE: expanding pulley includes many adjacent segments. Each segment has the possibility of radial movement and is engaged in sliding manner with pin element. Each pin element is engaged with each segment so that each segment has the possibility of movement in direction mainly at an angle to radial direction along each pin element. Expanding pulley also includes guiding element having the possibility of being moved and engaged with each segment for spatial location of each segment relative to another segment, many counterbalances each of which is connected with possibility of interacting with each segment and has the possibility of interacting engagement with each pin element; at that, each counterbalance applies the force counteracting to centripetal force of the segment. Each pin element is connected to the hub. The invention also refers to belt drive system containing the above expanding pulley.

EFFECT: creation of expanding segmental pulley in which the effective diameter is specified variably in compliance with the applied external torque moment.

10 cl, 22 dwg