US Patent 9393533 Blender

A blender including (i) a base with an interior space; (ii) a hollow central column extending upwardly from the base; (iii) a top housing mounted to the top of the column, a motor, drive transmission means and a drive shaft; (iv) an auger attached to a distal end of the drive shaft (v) a mixing bowl in coaxial alignment with the auger, (vi) a mixing bowl holder for releasably holding the mixing bowl in coaxial alignment; (vii) a ball screw drive mechanism housed within the column and for moving the mixing bowl in linear movement toward and away from the auger; and (viii) a splash guard positioned above the auger.