Gas separation – Plural serial basically diverse separating media – Plural stages in unitary casing
Reexamination Certificate
2004-09-08
2008-09-02
Hopkins, Robert A (Department: 1797)
Gas separation
Plural serial basically diverse separating media
Plural stages in unitary casing
C055S349000, C055S429000, C055S459100, C055SDIG030
Reexamination Certificate
active
07419521
ABSTRACT:
A dust collecting apparatus for a vacuum cleaner has a first cyclone dust collecting part and a second cyclone dust collecting part that are arranged substantially parallel with respect to an air inflow opening of a vacuum cleaner main body, and may be mirror images of each other. The first cyclone dust collecting part comprises a first suction opening and a first discharge opening, and the second cyclone dust collecting part comprises a second suction opening and a second discharge opening. The first and second suction openings are connected with the air inflow opening of the vacuum cleaner main body, and the first and second discharge openings are connected with a vacuum suction chamber of the vacuum cleaner main body. Accordingly, a dust collecting apparatus for a vacuum cleaner can be realized, having an advanced suction capability and dust separation capability.
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WPI Abstract Accession No. 1997-191498 & SE 9601771 ELECTROLUX AB See abstract and figure depicting two parallel mirror image cyclones for use in a vacuum cleaner. Note inlet 11 which splits into 12a and 12b.
Canadian Office Action, Oct. 2004.
WPI Abstract Accession No. 1997-191498 & SE 9601771 ELECTROLUX AB See abstract and figure depicting two parallel mirror image cyclones for use in a vacuum cleaner. Note inlet 11 which splits into 12a and 12b, Jan. 1997.
Second Office Action from the State Intellectual Property Office of China (with English translation) Mar. 23, 2007.
Han Jung-gyun
Oh Jang-keun
Hopkins Robert A
Ladas & Parry LLP
Samsung Gwangju Electronics Co. Ltd.
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