Gas separation – Multiple separators – each with discrete and longitudinally... – Centrifugal
Reexamination Certificate
2005-03-18
2008-09-02
Hopkins, Robert A (Department: 1797)
Gas separation
Multiple separators, each with discrete and longitudinally...
Centrifugal
C055S424000, C055S429000, C055S433000, C055SDIG030, C015S350000, C015S353000
Reexamination Certificate
active
07419522
ABSTRACT:
A dirt separation and collection assembly suitable for use in a bagless vacuum cleaner including two dirt separation and collection zones is provided. Dirty air enters the upper portion of a container and enters a first stage dirt separation zone including a disruptor ring extending inwardly from the outer wall to allow coarse dirt particles and fibers to pass through and collect at the base of the outer wall of the device. The spinning air is then drawn through a conical shroud and fed into a second stage conical separator for separating fine dirt particles and collecting them in an inner substantially cylindrical collection chamber. Air exits the conical separator at the opposite cone opening before being drawn to the suction source. Elements may be oriented upwardly or downwardly depending upon the configuration of the housing for receiving the dirt separation and collection assembly.
REFERENCES:
patent: 4853010 (1989-08-01), Spence et al.
patent: 2002/0020154 (2002-02-01), Yang
patent: WO 02/069778 (2002-09-01), None
Euro-Pro Operating LLC
Greenberg & Traurig, LLP
Hopkins Robert A
Wolfson Michael I.
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