Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2011-06-28
2011-06-28
Karls, Shay L (Department: 3723)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C055S337000, C055S345000
Reexamination Certificate
active
07966692
ABSTRACT:
The present invention relates to a multi-cyclone dust collector and a vacuum cleaner employing the same that forms an upwardly whirling air current so as to separate contaminants. The multi-cyclone dust collector for the vacuum cleaner includes a first cyclone unit causing dust-laden air sucked through a lower portion of the first cyclone unit to form a first upwardly whirling air current so as to separate contaminants from the dust-laden air by centrifugal force, and a second cyclone unit disposed under the first cyclone unit and making partially clean air, which is discharged from the first cyclone unit and then sucked in a lower portion of the second cyclone unit, to form a second upwardly whirling air current so as to separate dust from the partially clean air by centrifugal force.
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Search report dated Mar. 6, 2007 from corresponding EP 06290414.9.
Karls Shay L
Ohlandt Greeley Ruggiero & Perle LLP
Samsung Gwangju Electronics Co. Ltd.
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