A filter assembly includes a filter vessel having an inlet, an outlet, and defining a filter chamber therebetween. A basket assembly is removably supported within said filter chamber and has a diameter less than the diameter of the filter chamber so as to define an annular flow path about the basket...http://www.google.es/patents/US6361690?utm_source=gb-gplus-sharePatente US6361690 - Extended area filter basket assembly and filter bag therefor
Extended area filter basket assembly and filter bag therefor
