Variable circumference adjustable-drive pulley mechanism
Variable diameter pulley for a transmission
Variable diameter pulley having extendible elements
Variable diameter sprocket assembly
Variable drive transmission
Variable ratio bicycle chain drive
Variable ratio chain drive transmission
Variable ratio drive mechanism
Variable ratio drive mechanism
Variable ratio drive mechanism
Variable ratio drive system
Variable ratio drive system
Variable ratio drive system
Variable ratio drive system
Variable ratio magnetic drive mechanism
Variable ratio pulleys for flat belt transmission system
Variable ratio sprocket assembly
Variable ratio transmission
Variable ratio transmission system and clutch mechanism therefor
Variable speed accessory drive