Abstract: A worm wheel including first toothing regions transitioning into and on either side of a second toothing region and a complete annular surface on both ends of the worm wheel. The first toothing regions may have a constant outer diameter and the second toothing region may be depressed relative to the first toothing region. The first toothing regions may be globoid toothing regions and the second toothing region may be a cylindrical toothing region.

Abstract: Drive for an adjustment device, comprising a worm wheel which has a globoid toothing with a central cylindrical section. The drive for an adjustment device, specifically, a seat adjustment device within a vehicle, has a spindle (5) and a gear mechanism (9) coupled thereto which has a drive worm (20) drivable by a motor (2). The drive worm (20) engages a worm wheel (40). The toothing of the worm wheel (40) has a central section with cylindrical toothing (Z), which section transitions on both sides into a globoid toothing (G) such that at least one complete annular surface remains on both ends of the worm wheel (40). A method according to the invention of fabricating this worm wheel provides for a cutter (60) which is moved vertically relative to the axis (A) of a worm wheel blank.