Patent ID: 9706879
Date: 2017-07-18
CPC Classifications: A47J

Claim:
1. A blade driving assembly for a food processor comprising: a base housing an electric motor and having a support surface presenting a drive outlet driveable in rotation about a drive-outlet axis, a goblet having a base portion containing a drive shaft and adapted, when placed upon the support surface, to pick up the drive from the drive outlet in order to rotate the drive shaft about its longitudinal axis; the longitudinal axis being substantially coincident with the drive outlet axis; a blade-supporting shaft supported by the base portion and disposed for rotation within the goblet with its longitudinal axis substantially parallel with but laterally offset from the axis of the drive shaft; a planetary drive system supported by the base portion and adapted to convey rotational drive from the drive shaft to the blade-supporting shaft, such that the blade-supporting shaft is constrained to rotate around its own axis, thereby spinning the blade or blades supported thereby, while at the same time causing the blade-supporting shaft to rotate bodily around the axis of the drive shaft, thereby describing a locus centered on the axis but separated therefrom by a radial distance (d) corresponding to the lateral offset, and reducing formation of vortex patterns otherwise associated with simple rotation of the blade or blades about the drive shaft relative to foodstuffs in the goblet.