Vacuum cleaner

Details Vacuum cleaner Vacuum cleaner

2007-12-11

2007-12-11

Hopkins, Robert (Department: 1724)

Gas separation

Plural serial basically diverse separating media

Plural stages in unitary casing

C055S342000, C055S418000, C055S428000, C055S467000, C055SDIG030

Reexamination Certificate

active

10690757

ABSTRACT:
A vacuum cleaner includes a first dirt separation unit and a second dirt separation unit. The first dirt separation unit has a first inlet port through which a suction air stream including dirt particles is introduced thereinto, and the second dirt separation unit has a second inlet port through which the air stream introduced into the first dirt separation unit is introduced into the second dirt separation. The first and the second inlet port are disposed such that they are not registered with each other. Accordingly, the dirt particles suctioned are separated in two stages, thereby decreasing the possibility of occlusion of a filter and rapid deterioration of a suction force.

REFERENCES:
patent: 4593429 (1986-06-01), Dyson
patent: 6428589 (2002-08-01), Bair et al.
patent: 1927338 (1965-11-01), None
patent: 20020167 (2001-04-01), None
patent: 1074212 (2001-02-01), None
patent: 2001-104223 (2001-04-01), None
patent: 00/74548 (2000-12-01), None

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