Vacuum cleaner

Details Vacuum cleaner Vacuum cleaner

2007-12-25

2007-12-25

Hopkins, Robert A. (Department: 1724)

Gas separation

Plural serial basically diverse separating media

Plural stages in unitary casing

C055S343000, C055S345000, C055S418000, C055S426000, C055S459100, C055S459300, C055SDIG030

Reexamination Certificate

active

10753452

ABSTRACT:
An electric vacuum cleaner includes an inlet port through which a suctioned air stream including dirt particles pass and a centrifugal separation member having a substantially circular space therein. The centrifugal separation member has a swirl portion to swirl the dust-laden suction air stream along an inner surface of the centrifugal separation member. By forming swirl passageway between the swirl portion and the inner surface of the centrifugal separation member, the high velocity swirling air stream can be made and consequently an efficiency of separating the dirt particles from the suction air and collecting the dirt particles can be improved.

REFERENCES:
patent: 3953184 (1976-04-01), Stockford et al.
patent: 4593429 (1986-06-01), Dyson
patent: 6428589 (2002-08-01), Bair et al.
patent: 6835222 (2004-12-01), Gammack
patent: 2808987 (2001-11-01), None
patent: 2001-104223 (2001-04-01), None
patent: 2003-112082 (2003-04-01), None
patent: 2004-159814 (2004-06-01), None
patent: 03/030702 (2003-04-01), None

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