A portable cleaning device for removing sediment from an enclosure retaining water. The cleaning device includes a pump, a housing, and a receptacle. The pump creates a fluid flow through the cleaning device. The cleaning device draws water from the enclosure into the housing through a tube. The housing...http://www.google.es/patents/US7214314?utm_source=gb-gplus-sharePatente US7214314 - Cleaning apparatus and method
