Gas separation – Multiple separators – each with discrete and longitudinally... – Combined serial and parallel arrangement
Reexamination Certificate
2005-09-23
2009-02-17
Hopkins, Robert A (Department: 1797)
Gas separation
Multiple separators, each with discrete and longitudinally...
Combined serial and parallel arrangement
C055S349000, C055S418000, C055S429000, C055SDIG030
Reexamination Certificate
active
07491255
ABSTRACT:
Provided is a dust collection unit for a vacuum cleaner that can provide an improved collection efficiency, a reduced reduce, and a good outer appearance. The dust collection unit includes: a first filtering chamber for filtering first foreign objects; a plurality of second filtering chambers formed along an outer circumference of the first filtering chamber to receive air passed through the first filtering chamber and filter second foreign objects by using cyclone airflow, the second foreign objects being smaller than the first foreign objects; an air intake hole through which air is introduced into the second filtering chambers; at least one air introduction guide extended outward from the air intake hole to guide a flow of air introduced into the second filtering chamber; and a storing chamber formed under the filtering chamber.
REFERENCES:
patent: 6835222 (2004-12-01), Gammack
patent: 2004/0194250 (2004-10-01), Conrad et al.
patent: 2 865 917 (2004-08-01), None
patent: 2 360 719 (2001-10-01), None
patent: 2 360 719 (2001-10-01), None
patent: 2 399 780 (2004-09-01), None
patent: 52-14775 (1977-02-01), None
patent: 2 237 424 (2004-10-01), None
patent: WO 02/069778 (2002-09-01), None
Hopkins Robert A
LG Electronics Inc.
McKenna Long & Aldridge LLP
LandOfFree
Dust collection unit for vacuum cleaner does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dust collection unit for vacuum cleaner, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dust collection unit for vacuum cleaner will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4072280