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US 6,782,585 B1Granted
Upright vacuum cleaner with cyclonic air flow
AssigneeFantom Technologies Inc.
InventorsWayne Ernest Conrad, Helmut Gerhard Conrad
Life of this patent
Estimating the term…
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.
Claims8
A vacuum cleaner comprising:
- (a) a nozzle and a source of suction to draw air containing particulate matter into the nozzle and produce an air stream in the vacuum cleaner;
- (b) a first cyclonic cleaning stage comprising a cyclone having a first cyclonic cleaning stage inlet and a first cyclonic cleaning stage outlet;
- (c) a second cyclonic cleaning stage positioned in series with the first cyclonic cleaning stage, the second cyclonic cleaning stage comprising a plurality of second stage cyclones, each of the second stage cyclones having a second stage cyclone inlet and a second stage cyclone outlet;
- and,
- (d) a passage connecting the first cyclonic cleaning stage outlet and the second stage cyclone inlets wherein the passage does not increase in cross-sectional area in a downstream direction.
2 more elements
The vacuum cleaner as claimed in 1 wherein the passage is at least partially defined by the second stage cyclones.
Dependencies are inferred from the claim text.