Dust collection unit for vacuum cleaner

Details Dust collection unit for vacuum cleaner Dust collection unit for vacuum cleaner

2005-09-23

2009-02-03

Hopkins, Robert A (Department: 1797)

Gas separation

Plural serial basically diverse separating media

Plural stages in unitary casing

C055S343000, C055S346000, C055S429000, C055SDIG030

Reexamination Certificate

active

07485164

ABSTRACT:
A dust collection unit for a vacuum cleaner includes a collection body having a plurality of filtering chambers different from each in a volume and a plurality of storing chambers storing foreign objects filtered in the filtering chambers, a bottom seal member defining a bottom of the collection body, and an exhaust member guiding airflow in the filtering chambers. The exhaust member contacts tops of the filtering chambers as well as an outer circumference of the collection body.

REFERENCES:
patent: 3320727 (1967-05-01), Farley et al.
patent: 6502278 (2003-01-01), Oh et al.
patent: 6810558 (2004-11-01), Lee
patent: 7128770 (2006-10-01), Oh et al.
patent: 2002/0194993 (2002-12-01), Gen
patent: 2 399 780 (2004-09-01), None
patent: 2204312 (2003-05-01), None
patent: 2226354 (2004-04-01), None

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