Patent ID: 6238451
Filing Date: 2001-05-29
Classification: A47L,B01D,B04C,Y10S

Abstract:
A vacuum cleaner for receiving and cleaning a dirty air stream to obtain clean air 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 in communication with a source of suction;d. first means for cyclonically treating the dirty air stream to obtain a partially cleaned air stream;e. second means for further cyclonically treating the dirty air stream positioned downstream from the first means for cyclonically treating a dirty air stream; and,f. electronic filtering means positioned downstream from the first means for cyclonically treating a dirty air stream and upstream of the second means for further cyclonically treating the dirty air stream.