Patent ID: 8240998
Filing Date: 2012-08-14
Classification: F03B,F03D,F04D,Y02E

Abstract:
1. A rotatable impeller, comprising: a hollow, conical and/or cylindrical, stackable component connected to the tubular power axle, the stackable component having a first open end; a plurality of stack portions of the stackable component that are concentrically positioned at a fixed distance from the tubular power axle in at least one level of the stackable component; a mounting disc that forms a frustum plane at a second smaller end of the stackable component and that is attached to the stackable component, the tubular power axle projects through the mounting disc; at least one structural tube that radially connects the tubular power axle to the stackable component; at least one torsion-braced cross-coupling that positions at least one structural tube with respect to the tubular power axle; and an attachment device that connects the at least one structural tube to the stackable component.