ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
Control functions within; control units of; change-speed- or reversing-gearings for conveying rotary motion; ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
specially adapted for change-speed gearing in group arrangement, i.e. with separate change-speed gear trains arranged in series, e.g. range or overdrive-type gearing arrangements
