A cleaning and scouring brush generally made from a pair of twisted wire arms, each arm having a cleaning portion shaped to conform to the interior profile of an article to be cleaned. The portions are provided with a cleaning or scouring device such as a sponge, scrubber or bristles intended to clean...http://www.google.fr/patents/US6775874?utm_source=gb-gplus-shareBrevet US6775874 - Expandable cleaning brush
