the axes of the members being parallel or approximately parallel

Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members > without members having orbital motion > Gearings providing a continuous range of gear ratios > in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B > in which the member B has a conical friction surface > externally > the axes of the members being parallel or approximately parallel

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 a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B > in which the member B has a conical friction surface > externally > the axes of the members being parallel or approximately parallel