in which an orbital gear has an axis crossing the main axis of the gearing and has helical teeth or is a worm

Full Title

Toothed gearings for conveying rotary motion (specific for conveying rotary motion with variable gear ratio or for reversing rotary motion F16H3/00) > with gears having orbital motion > in which an orbital gear has an axis crossing the main axis of the gearing and has helical teeth or is a worm