US Patent 11583144 Micro puree machine with partial depth processing

A micro puree machine includes a mixing shaft coupled to a blade and rotatable by means of a gear. A magnet is coupled to the gear and a rotation sensor is mounted on the machine housing. As the mixing shaft descends into the pre-frozen ingredients, the rotation sensor detects a magnetic field of the magnet as the gear rotates and generates a rotation signal in response. A controller receives the rotation signal and determines a rotation count associated with the gear, causing the mixing shaft to ascend back toward the housing once a pre-selected rotation count has been reached. The pre-selected rotation count correlates with the partial processing of the ingredients.