US Patent 9681778 Food processing tool

A tool intended as an attachment or accessory for a food processor and configured to automate the delicate operation of folding ingredients together without expelling air is described. The tool includes first and second curved blades which depend from a casing part that is rotated within a processing bowl by means of a geared arrangement that picks up rotary drive from a drive shaft coupled to a driven outlet on the base of the food processor. The blades are disposed at different distances from the axis about which the casing rotates, so that the outer blade passes closer to the wall of the bowl than does the inner blade.