Patent ID: 6027242
Filing Date: 2000-02-22
Classification: A47J

Abstract:
A blender for preparing food comprising:a container, a transmission, and an electric motor, said container attachable to said transmission and having a throat portion defining an area of decreasing volume relative to an upper portion of the container;said transmission further including a housing with a drive shaft disposed therein that is operatively connected to said electric motor;a mixing blade positioned upwardly into the container and attachable to said drive shaft, said mixing blade rotated by the operation of said electric motor;a speed reducer contained within said housing of said transmission, said speed reducer operatively driven by said electric motor;a waveform ramp configured to have at least one elevation and at least one depression, said waveform ramp operatively rotated by said speed reducer at a slower rotational rate than said mixing blade; anda guide that operatively engages said mixing blade and said elevation and depression of said waveform ramp, said engagement of said guide oscillates said mixing blades on a vertical axis between locations in said container having larger and smaller volumes.