Gas separation – With separated gas outflow control
Reexamination Certificate
2005-06-10
2009-06-09
Hopkins, Robert A (Department: 1797)
Gas separation
With separated gas outflow control
C055S429000, C055S459100, C055SDIG030, C015S350000, C015S353000
Reexamination Certificate
active
07544226
ABSTRACT:
A grille member that can be used, for example, in a cyclone dust-collecting apparatus and a vacuum cleaner comprises a body around which a rotating current is formed, and a plurality of air passages formed at the body to guide the rotating current into the body. In an embodiment, the air passages have a leading surface facing toward a flow direction of the rotating air current and a tail surface upstream from the leading surface relative to the rotating air current, such that at least one plane extending along the tail surface and a line along the flow direction of the rotating air current meet at an obtuse angle. In this way, stagnant vortices are not generated in the vicinity of the tail surfaces of the air passages, and dust and the like do not accumulate in the vicinity of the tail surfaces of the air passages when dirt is centrifugally separated from drawn-in air by the rotating current.
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Blank Rome LLP
Hopkins Robert A
Samsung Gwangju Electronics Co. Ltd.
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