Dust separation system
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United States of America Patent
Stats
-
Jan 16, 2007
Grant Date -
Jun 23, 2005
app pub date -
Nov 26, 2004
filing date -
Nov 26, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vacuum cleaner having a nozzle, a handle pivotally attached to the nozzle, and a suction motor that has an inlet, and is adapted to generate a working air flow through the nozzle. The vacuum includes a separation system having an outer wall and a closed tube having at least a portion of its length located within the wall, and forming a separation chamber between the wall and the closed tube. The separation chamber has an inlet, in communication with the nozzle, that is adapted to impart a tangential component to the air flow as it flows through the separation chamber. A hollow tube is generally coaxially aligned with the closed tube and has a tube inlet at an end adjacent the closed tube and a tube outlet at an end opposite the closed tube. The tube outlet is in fluid communication with the suction motor inlet.
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