Patent ID: 7616440

Claim:
A system comprising: a chassis supporting at least one electrical component; and, an impeller, supported by a housing, positioned proximate the chassis and configured to be rotated by a motor, the impeller comprising multiple blades and at least one pair of scoops, the multiple blades configured to create air movement past the impeller upon rotation of the impeller, and the at least one pair of scoops configured to force air through the impeller and past the motor upon rotation of the impeller; wherein each scoop of each pair of scoops is defined in a surface of a hub of the impeller, wherein the surface of the hub is generally transverse to an axis of rotation of the impeller, and wherein each scoop is an approximate conoid in shape; wherein the conoid shape of each scoop defines an opening that is radially offset from the axis of rotation of the impeller, wherein rotation of the hub causes rotation of the scoops in a circular path, and wherein rotation of the scoops causes air to enter the opening by movement that is generally orthogonal to the axis of rotation of the impeller; wherein the surface of the hub defines a hole adjacent to each scoop to allow passage of air forced by the adjacent scoop into the impeller; wherein each pair of the at least one pair of scoops comprises two scoops in an inverse symmetrical relationship to each other; and wherein the impeller and housing are separated by a gap, and wherein the gap allows the air forced into the impeller to exit from the impeller.