Patent ID: 6383266
Filing Date: 2002-05-07
Classification: A47L,B01D,B04C,Y10S

Abstract:
A vacuum cleaner comprising:(a) a dirty air inlet for receiving air containing dirt; (b) a clean air outlet spaced for the dirty air inlet; (c) an air flow path extending downstream from the dirty air inlet to the clean air outlet; and, (d) a filtration assembly positioned in the air flow path, the filtration assembly comprising: (i) at least one cyclonic cleaning stage in flow communication with the dirty air inlet and having a partially cleaned air outlet; and, (ii)at least one electrostatic precipitator positioned in the air flow path downstream from the at least one cyclonic cleaning stage and upstream of the clean air outlet; and, (e) a battery for operating the vacuum cleaner including producing a high voltage potential which is used by the electrostatic precipitator wherein the high voltage potential is produced in response to air flow through the vacuum cleaner.