Patent attributes
A household appliance includes a housing, height-adjustable levelling feet arranged on an underside of the housing, and height-adjusting devices for adjusting a height of the leveling feet, respectively. Each height-adjusting device includes an adjustment housing fixed to the housing, a threaded shaft passing vertically through the adjustment housing in an interlocking manner and including a foot plate, a worm wheel as an output gear at an outer circumference thereof which is mounted rotatably in the adjustment housing and threadably engaged with the threaded shaft, and a worm connected to an adjusting rod and forming a drive gear for driving the worm wheel. The threaded shaft can have along a length thereof a flattened section which rests against the adjustment housing at one point at least, or two flattened sections arranged on opposite sides of the threaded shaft, or two axially extending grooves arranged on opposite sides of the threaded shaft.
