Upright vacuum cleaner with cyclonic air flow
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Aug 31, 2004
Issued Date -
N/A
app pub date -
Oct 5, 2000
filing date -
Jan 8, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A vacuum cleaner has a first cyclonic cleaning stage and a second cyclonic stage positioned in series with the first cyclonic cleaning stage. The second cyclonic stage comprises a plurality of second stage cyclones. A passage connects the first cyclonic cleaning stage outlet and the second stage cyclones inlets. The passage does not increase in cross-sectional area in a downstream direction.
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