Gas separation – Plural serial basically diverse separating media – Plural stages in unitary casing
Reexamination Certificate
2005-09-23
2010-06-08
Griffin, Walter D (Department: 1797)
Gas separation
Plural serial basically diverse separating media
Plural stages in unitary casing
C055S343000
Reexamination Certificate
active
07731769
ABSTRACT:
Provided is a cyclonic dust collection unit for conveniently removing a foreign object filtered therein. The cyclonic dust collection unit includes: a first filtering chamber for filtering a first foreign object having a first size using a cyclone airflow; a second filtering chamber for filtering a second foreign object having a second size smaller than the first size of the first foreign object, the second foreign object being contained in the air passed through the first filtering chamber; a foreign object storing chamber for storing the first and/or second foreign object(s) separated through the first and second filtering chambers; a filter disposed in the first filtering chamber, for separating the first foreign object on an outer surface thereof; and a cutaway hole formed in a longitudinal direction thereof.
REFERENCES:
patent: 3969096 (1976-07-01), Richard
patent: 5248323 (1993-09-01), Stevenson
patent: 5287591 (1994-02-01), Rench et al.
patent: 6171356 (2001-01-01), Twerdun
patent: 6228260 (2001-05-01), Conrad et al.
patent: 6406505 (2002-06-01), Oh et al.
patent: 6746500 (2004-06-01), Park et al.
patent: 6887290 (2005-05-01), Strauser et al.
patent: 7065826 (2006-06-01), Arnold
patent: 2002/0178697 (2002-12-01), Oh
patent: 2004/0098828 (2004-05-01), Oh
patent: 2004/0111824 (2004-06-01), Vuijk
patent: 2006/0123590 (2006-06-01), Fester et al.
patent: 2006/0236663 (2006-10-01), Oh
patent: 1219223 (2002-07-01), None
patent: 1 323 370 (2003-07-01), None
patent: 700791 (1953-12-01), None
patent: 2230476 (2004-06-01), None
patent: 2234232 (2004-08-01), None
patent: 2236813 (2004-09-01), None
Griffin Walter D
LG Electronics Inc.
McKenna Long & Aldridge LLP
Orlando Amber
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