Vacuum cleaner having a dual filter assembly

Gas separation – Deflector – Fixed gas whirler or rotator means

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Details

55472, 55476, 55DIG3, 96321, 96406, B01D 4512

Patent

active

061136638

ABSTRACT:
A vacuum cleaner having a dual filter assembly includes a filter cage, a primary filter disposed on the filter cage, and a secondary filter disposed downstream of the primary filter. A float valve between the primary filter and the secondary filter inhibits liquid from coming into contact with the secondary filter.

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Liu, U.S. Patent Application Serial No. 09/143,980, filed Aug. 31, 1998.

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