Patent ID: 7299913

Claim:
Drive unit for a vibrating spiral conveyor having a central axis of rotation comprising a base part, a pot, an opposed-action part and a fastening part, said opposed-action part being flexibly connected by first leaf spring elements with the pot, said fastening part being flexibly connected by second leaf spring elements with the pot, said first and second leaf spring elements each having a central transverse axis and each having a longitudinal axis, the opposed-action part and the fastening part being enabled to be brought into an opposite, oscillating, torsionally vibrating movement about the central axis of rotation, the first and second leaf spring elements being disposed in such a manner that their central transverse axis (M), which is disposed essentially radially to the central axis of rotation and which is perpendicular to the longitudinal axis, intersects the leaf spring elements essentially in the center with respect to their respective length and extends parallel to lateral surfaces of the respective spring elements.