| 摘要 |
An apparatus and method for moving a flow of air and particulates through a vacuum cleaner having a central hub with a hub axis and a plurality of vanes depending from the hub and extending in an approximately radial direction away from the hub axis, the vanes comprising an inner edge located near the central hub, an outer edge spaced radially outward from the inner edge, a first top edge, a second top edge located between the inner edge and the first top edge, and wherein the second top edge is orientated in a direction less than parallel to the hub axis.
|
