Dust collecting device for vacuum cleaner

Details Dust collecting device for vacuum cleaner Dust collecting device for vacuum cleaner

2006-06-30

2009-12-22

Smith, Duane (Department: 1797)

Gas separation

Multiple separators, each with discrete and longitudinally...

Centrifugal

C055S337000, C055S426000, C055S428000, C055SDIG030, C015S353000

Reexamination Certificate

active

07635400

ABSTRACT:
A dust collecting device of a vacuum cleaner includes a first cyclone unit comprising a first cyclone chamber where the air enters through a first inlet and spins, and a first dust collecting chamber where dust separated from the air is collected; and a second cyclone unit comprising a second cyclone chamber where the air, discharged from the first cyclone unit, enters through a second inlet and spins, and one or more dust collecting parts formed on a circumference of a second cyclone body to separate minute dust from the air upon contacting with the air spinning within the second cyclone chamber. Accordingly, efficiency in collecting minute dust by the dust collecting device increases.

REFERENCES:
patent: 7014671 (2006-03-01), Oh
patent: 2004/0231305 (2004-11-01), Oh
patent: 2006/0117723 (2006-06-01), Yoo
patent: 2006/0156699 (2006-07-01), Kim
patent: 2007/0214754 (2007-09-01), Kim
patent: 0074548 (2000-12-01), None
British Combined Search and Examination Report dated Oct. 18, 2006 issued in connection with British Patent Application No. 0613879.9 filed on Jul. 12, 2006.
Office Action dated Nov. 7, 2008 corresponding to Chinese Patent Application No. 200610108333.1.

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