In one embodiment of the invention, a pump includes a pump housing, an impeller, and a motor. The pump housing has a pump chamber and a heat receiving plate to couple to a heat generating unit, such as a CPU. The impeller is provided in the pump chamber. The motor couples to the impeller to rotate it....http://www.google.se/patents/US7280357?utm_source=gb-gplus-sharePatent US7280357 - Pump and electronic device having the pump
