A pump for pumping a liquid comprises a rotor, a stator having at least one electrical winding and at least one cooling path, and a working conduit extending from a pump inlet to a pump outlet, the working conduit being in liquid communication with the cooling path at least at a cooling path inlet to...http://www.google.fr/patents/US7794214?utm_source=gb-gplus-shareBrevet US7794214 - Pump and method
