Dust-separating apparatus for vacuum cleaner

Details Dust-separating apparatus for vacuum cleaner Dust-separating apparatus for vacuum cleaner

2005-07-15

2008-08-12

Hopkins, Robert A (Department: 1797)

Gas separation

Plural serial basically diverse separating media

Plural stages in unitary casing

C055S343000, C055S457000, C055SDIG030

Reexamination Certificate

active

07410517

ABSTRACT:
A dust separating apparatus for a vacuum cleaner is provided. The dust separating apparatus comprises a first dust separating unit having a suction port, a guide member spirally, and a main filter to collect dust separated from drawn-in air, a second dust separating unit including a plurality of cyclones annularly arranged to centrifugally separate the dust from the air discharged from the first dust separating unit, and a cover unit to guide the air discharged from the first and the second dust separating units. The first dust separating unit separates the dust included in drawn-in air by rotating along the guide member and passing through the main filter the air drawn in through the suction port. The second dust separating unit rotates the air discharged from the first dust separating unit, thereby further filtering the air.

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Official Action dated May 18, 2007 from corresponding Chinese Patent Application No. 200510098685.9.
Extended European Search Report daed Sep. 15, 2006 issued from the European Patent Office with respect to European Patent Application No. 05291770.5 filed on Aug. 23, 2005.

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