A cyclone dust collecting apparatus for a vacuum cleaner includes a cyclone body and a separately removable contaminant receptacle. The cyclone body, which is fixed to a fan motor portion of a cleaner body, separates contaminants from the air that is drawn into the cleaner body. The cyclone body having...http://www.google.com/patents/US6640385?utm_source=gb-gplus-sharePatent US6640385 - Cyclone dust collecting apparatus for a vacuum cleaner
