Abstract: A method of producing inner parts of a tripod joint followed by a tubular shaft has one end of the tubular shaft deformed in a non-chip-forming way. The deforming increases the wall thickness. Radial arms are connected to the thickened region of the tubular shaft end, preferably by friction welding.

Abstract: A continuously controllable drive having a form-fitting power transmission system as a result of the engagement of paired teeth, having a first tooth assembly with toothed segment bars which include teeth of uniform cross-sections with curved center lines which extend in the direction of an input shaft to which they are non-rotatingly as well as axially movably and fixably connected; a second set of teeth at a gearwheel which includes teeth of variable cross-sections with curved center lines with a concave shape which extend in the direction of an output shaft to which the gearwheel is connected and which, starting from a minimum central cross-section of the gearwheel, towards its sides, feature a positive profile displacement and pitch aperture.