Variable circumference adjustable-drive pulley mechanism

Variable diameter pulley

Variable diameter pulley

Variable diameter pulley assembly

Variable diameter pulley for a transmission

Variable diameter pulley having extendible elements

Variable diameter pulley with centrifugal weights

Variable diameter sprocket assembly

Variable diameter sprocket assembly

Variable drive transmission

Variable drive transmission

Variable effective diameter pulley

Variable effective diameter pulleys for variable speed transmiss

Variable pitch diameter torque sensing pulley assembly

Variable pitch sheave assembly for fan drive system

Variable pitch silent chain

Variable pitch type V-pulley

Variable pulley accessory drive

Variable pulley structure

Variable pulley torque drive means