Incrementally variable bicycle transmission

Incrementally variable transmission

Incrementally variable transmission

Multi-ratio drive

Multi-speed transmission for bicycles

Multiple speed transmission for bicycles

Oriented flat belt continuously variable transmission using pull

Positive engagement continuously variable transmission

Self-adjusting variable speed idler pulley

Silica abrasive dentifrice of reduced stringless and improved fl

Single or double variable diameter pulley and speed variators in

Speed control device for a bicycle

Sprocket ratio changer

Steplessly variable belt drive for bicycle

Synergetic speed-variating means as eccentrically operated

Torque responsive automatic bicycle transmission with hold syste

Transmission

Transmission ratio variators

Transmission ratio variators

Variable circumference adjustable-drive pulley mechanism