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
with at least two dynamo-electric machines for creating an electric power path inside the transmission device, e.g. using generator and motor for a variable power torque path
