in which two members co-operative by means of balls, or rollers of uniform effective diameter, not mounted on shafts

Full Title

Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members (control of change-speed or reversing-gearings conveying rotary motion F16H59/00 - F16H63/00) > without members having orbital motion > Gearings providing a continuous range of gear ratios > in which two members co-operative by means of balls, or rollers of uniform effective diameter, not mounted on shafts