Patent US6482252B1 successfully refreshed from Google Patents.
US6482252B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner utilizing electrostatic filtration and electrostatic precipitator for use therein
Assignee: Fantom Technologies Inc
•
Filing: 2000-01-07
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Granted: 2002-11-19
•
Expires: 2020-01-07
Abstract
Abstract An apparatus for filtering a dirty air stream in a vacuum cleaner to obtain a clean air stream includes subjecting the dirty air stream to a first cyclonic separation stage to obtain a partially cleaned air stream and subjecting the partially cleaned air stream to an electronic filtration stage and optionally a second cyclonic separation stage to obtain the clean air stream. The electronic filtration stage is optionally removable with a cyclonic cleaning stage from the vacuum cleaner. The electronic filtration stage is optionally an electrostatic precipitator which utilizes air flow through the vacuum cleaner to generate the voltage used by the electrostatic precipitator.
Inventors
- 👤 Wayne Ernest Conrad
- 👤 Helmut Gerhard Conrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:50
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/12; A47L9/122; A47L9/16; A47L9/1616; A47L9/1625; A47L9/1641; A47L9/1658; A47L9/1666; A47L9/1691; B; B01; B01D; B01D45/00; B01D45/12; B01D45/16; B01D50/00; B04; B04C; B04C5/00; B04C5/24; B04C9/00; B04C2009/002; Y; Y10; Y10S; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
70 words
A vacuum cleaner for receiving and cleaning a dirty air stream to obtain clean air comprising: (a) a cyclone removably mounted in a housing of the vacuum cleaner and having an inlet for receiving a dirty air stream and an outlet for removal from the cyclone of a partially cleaned air stream; and, (b) an electrostatic filter positioned in the outlet from the cyclone and removably mounted with the cyclone.
Claim 2
Dependent Claim
70 words
A vacuum cleaner for receiving and cleaning a dirty air stream to obtain clean air comprising: (a) a cyclone removably mounted in a housing of the vacuum cleaner and having an inlet for receiving a dirty air stream and an outlet for removal from the cyclone of a partially cleaned air stream; and, (b) an electrostatic filter positioned in the outlet from the cyclone and removably mounted with the cyclone.
Claim 3
Dependent Claim
53 words
The vacuum cleaner as claimed in claim 1 , wherein the electrostatic filter comprises means for generating a high voltage potential in response to air flow through the electrostatic filter and a conductive member for transmitting the high voltage potential to dirt entrained in the dirty air stream positioned upstream from the cyclone.
Claim 4
Dependent Claim
33 words
The vacuum cleaner as claimed in claim 1 further comprising a battery for operating the vacuum cleaner and the electrostatic filter produces a high voltage potential in response to air flow there through.
Claim 5
Dependent Claim
19 words
The vacuum cleaner as claimed in claim 1 further comprising a second cyclone positioned upstream from the first cyclone.
Claim 6
Dependent Claim
29 words
The vacuum cleaner as claimed in claim 4 wherein the electrostatic filter is positioned in the air flow path downstream from the cyclone and upstream of the second cyclone.
Claim 7
Dependent Claim
31 words
The vacuum cleaner as claimed in claim 4 wherein the electrostatic filter is positioned in the air flow path downstream from the second cyclone and upstream of the clean air outlet.
Claim 8
Dependent Claim
25 words
The vacuum cleaner as claimed in claim 4 wherein the second cyclone removes particulate material larger than that which is removed by the electrostatic filter.
Claim 9
Dependent Claim
17 words
The vacuum cleaner as claimed in claim 1 further comprising a battery for operating the vacuum cleaner.
Claim 10
Dependent Claim
33 words
The vacuum cleaner as claimed in claim 1 wherein the cyclone comprises a cyclone bin and a cover and the cyclone bin and cover are removable as a unit from the vacuum cleaner.
Claim 11
Dependent Claim
17 words
The vacuum cleaner as claimed in claim 9 wherein the electrostatic filter is positioned in the cover.
Claim 12
Dependent Claim
18 words
The vacuum cleaner as claimed in claim 10 wherein the cover is releasable securable to the cyclone bin.
Claim 13
Dependent Claim
18 words
The vacuum cleaner as claimed in claim 9 wherein the cover is releasable securable to the cyclone bin.
Claim 14
Dependent Claim
23 words
The vacuum cleaner as claimed in claim 1 wherein the electrostatic filter is accessible when the cyclone is removed from the vacuum cleaner.
Claim 15
Dependent Claim
22 words
The vacuum cleaner as claimed in claim 1 wherein the electrostatic filter is automatically removed from the vacuum cleaner with the cyclone.
Claim 16
Dependent Claim
17 words
The vacuum cleaner as claimed in claim 1 wherein the electrostatic filter forms part of the outlet.
Claim 17
Dependent Claim
24 words
The vacuum cleaner as claimed in claim 9 wherein the outlet passes through the cover and the electrostatic filter is positioned in the outlet.
Claim 18
Dependent Claim
18 words
The vacuum cleaner as claimed in claim 1 wherein the electrostatic filter is removable mounted in the housing.
Claim 19
Dependent Claim
23 words
The vacuum cleaner as claimed in claim 17 wherein the electrostatic filter is washable by placing it in a stream of running water.
Claim 20
Dependent Claim
23 words
The vacuum cleaner as claimed in claim 1 wherein the electrostatic filter is washable by placing it in a stream of running water.
Claim 21
Dependent Claim
35 words
The vacuum cleaner as claimed in claim 1 wherein the electrostatic filter utilizes an electrostatic charge to remove dirt entrained in the partially cleaned air stream and the electrostatic charge is generated by air flow.
Claim 22
Dependent Claim
83 words
A vacuum cleaner for receiving and cleaning a dirty air stream to obtain clean air comprising: (a) a cyclone bin and a cyclone bin cover removably mounted in a housing of the vacuum cleaner and having an inlet for receiving a dirty air stream and an outlet for removal from the cyclone of a partially cleaned air stream, the cyclone bin and bin cover are removable as a unit from the housing; and, (b) an electrostatic filter mounted in the cyclone bin cover.
Claim 23
Dependent Claim
83 words
A vacuum cleaner for receiving and cleaning a dirty air stream to obtain clean air comprising: (a) a cyclone bin and a cyclone bin cover removably mounted in a housing of the vacuum cleaner and having an inlet for receiving a dirty air stream and an outlet for removal from the cyclone of a partially cleaned air stream, the cyclone bin and bin cover are removable as a unit from the housing; and, (b) an electrostatic filter mounted in the cyclone bin cover.
Claim 24
Dependent Claim
20 words
The vacuum cleaner as claimed in claim 21 wherein the electrostatic filter is removable mounted in the cyclone bin cover.
Claim 25
Dependent Claim
23 words
The vacuum cleaner as claimed in claim 21 wherein the electrostatic filter is washable by placing it in a stream of running water.
Claim 26
Dependent Claim
35 words
The vacuum cleaner as claimed in claim 21 wherein the electrostatic filter utilizes an electrostatic charge to remove dirt entrained in the partially cleaned air stream and the electrostatic charge is generated by air flow.
Claim 27
Dependent Claim
20 words
The vacuum cleaner as claimed in claim 24 wherein the electreostatic filter is removably mounted in the cyclone bin cover.
Claim 28
Dependent Claim
29 words
The vacuum cleaner as claimed in claim 21 further comprising a battery for operating the vacuum cleaner and a high voltage potential is produced in response to air flow.
Claim 29
Dependent Claim
19 words
The vacuum cleaner as claimed in claim 21 further comprising a second cyclone positioned upstream from the first cyclone.
Claim 30
Dependent Claim
29 words
The vacuum cleaner as claimed in claim 27 wherein the electrostatic filter is positioned in the air flow path downstream from the cyclone and upstream of the second cyclone.
Claim 31
Dependent Claim
25 words
The vacuum cleaner as claimed in claim 27 wherein the second cyclone removes particulate material larger than that which is removed by the electrostatic filter.
Claim 32
Dependent Claim
17 words
The vacuum cleaner as claimed in claim 21 further comprising a battery for operating the vacuum cleaner.
Claim 33
Dependent Claim
29 words
The vacuum cleaner as claimed in claim 21 wherein the vacuum cleaner is an upright vacuum cleaner and a motor driven fan is positioned above the cyclone bin cover.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-11-18 | 2006-05-20 | 2006-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-11-18 | 2010-05-20 | 2010-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-11-18 | 2014-05-20 | 2014-11-19 | $7700.00 | Window Closed / Lapsed |