Cyclonic vacuum cleaner ribbed cyclone shroud

Details Cyclonic vacuum cleaner ribbed cyclone shroud Cyclonic vacuum cleaner ribbed cyclone shroud

2011-04-12

2011-04-12

Hopkins, Robert A (Department: 1776)

Gas separation: processes

Deflecting

Centrifugal force

C055S337000, C055S429000, C055S459100, C055SDIG030

Reexamination Certificate

active

07922794

ABSTRACT:
A vacuum cleaner cyclone separator having a cyclone chamber with an air inlet and an air outlet. The cyclone chamber directs an airflow into a cyclonic pattern to remove a first amount of debris from the airflow. A filter shroud is located within the cyclone chamber and separates the air inlet from the air outlet. The filter shroud includes an air-pervious filter surface adapted to allow the airflow to pass from the air inlet to the air outlet and remove a second amount of debris from the airflow. One or more protrusions are associated with the filter surface, and configured and dimensioned to direct at least a portion of the airflow passing generally parallel to the filter surface away from the filter surface before passing through the filter surface. A dirt collection assembly having a cyclone separator and a method for using a cyclone separator are also disclosed.

REFERENCES:
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patent: 2008/0257161 (2008-10-01), Read
International Search Report mailed Jan. 29, 2010, PCT/US09/59960.

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