Patent ID: 6419719
Filing Date: 2002-07-16
Classification: A47L,B04C,B29B,Y10S

Abstract:
A vacuum cleaner comprising:(a) a dirty air inlet in fluid communication with a source of suction, the source of suction producing an air stream through the vacuum cleaner; (b) a dirt filter positioned downstream from the dirty air inlet, the dirt filter comprising at least first and second cyclone separation stages; (c) the first cyclone separation stage comprising an upright cyclone having a first end, a second end positioned below the first end, a dirty air inlet positioned adjacent the first end, a cyclonic flow region and a cyclonic flow region exit; and, (d) the second cyclonic separation stage positioned downstream from the first cyclone separation stage and comprising a plurality of inverted cyclones, each inverted cyclone having a first wider end, a second narrower end positioned above the first wider end, a dirty air inlet positioned adjacent the first wider end, a cyclonic flow region and a cyclonic flow region exit.