US5087428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air purifying system
Assignee: Systemes Ozonics Inc
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Filing: 1990-05-30
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Granted: 1992-02-11
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Expires: 2010-05-30
Abstract
Abstract A closed container has openings at an input end for drawing air into the container and openings at the output end for passing air out of the container. An ozone generator is disposed inside the container adjacent the input end and a corona generator is disposed in the container adjacent the output end. The corona generator includes a dielectric made of a material having a dielectric constant of 1000 or greater. Impure air which is drawn in at the input end passes over the ozone generator whereby the ozone reacts with the impurities of the impure air to provide purified air. The purified air with remaining ozone is passed over the corona generator means to destroy the remaining ozone.
Inventors
- 👤 David Fletcher
- 👤 Barry Welford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:10
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/32; C; C01; C01B; C01B13/00; C01B13/10; C01B13/11; C01B2201/00; C01B2201/30; C01B2201/34; C01B2201/40
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
164 words
An air purifying system comprising: a closed container having an input end, for receiving impure air, and an output end, through which purified air is expelled; means for drawing impure air into said closed container at said input end thereof; ozone generator means, for producing a high concentration of ozone, inside said closed container, adjacent said input end thereof; corona generator means, disposed in said closed container, adjacent said output end thereof; said corona generator means including a dielectric made of a material having a dielectric constant of 1000 or greater; whereby, said impure air drawn in at said input end passes over said ozone generator means, said ozone thereby reacting with said impurities of said impure air to provide purified air, said purified air with remaining ozone passing over said corona generating means; whereby, ozone remaining in said purified air is destroyed by the corona of said corona generating means instead of being expelled out of said second end of said closed container.
Claim 2
Dependent Claim
164 words
An air purifying system comprising: a closed container having an input end, for receiving impure air, and an output end, through which purified air is expelled; means for drawing impure air into said closed container at said input end thereof; ozone generator means, for producing a high concentration of ozone, inside said closed container, adjacent said input end thereof; corona generator means, disposed in said closed container, adjacent said output end thereof; said corona generator means including a dielectric made of a material having a dielectric constant of 1000 or greater; whereby, said impure air drawn in at said input end passes over said ozone generator means, said ozone thereby reacting with said impurities of said impure air to provide purified air, said purified air with remaining ozone passing over said corona generating means; whereby, ozone remaining in said purified air is destroyed by the corona of said corona generating means instead of being expelled out of said second end of said closed container.
Claim 3
Dependent Claim
37 words
A system as defined in claim 1 wherein said input end comprises openings through which said impure air can be drawn into said container; said means for drawing impure air into said closed container comprising fan means.
Claim 4
Dependent Claim
51 words
A system as defined in claim 2 wherein said ozone generator means comprises: a first flat dielectric plate having a first surface and a second surface; a first electrode disposed on said first surface of said first plate and a second electrode disposed on the second surface of said first plate.
Claim 5
Dependent Claim
19 words
A system as defined in claim 3 wherein said electrodes comprise tubular members made of a wire mesh material.
Claim 6
Dependent Claim
22 words
A system as defined in claim 4 wherein said first plate has a dielectric constant in the range of 50 to 100.
Claim 7
Dependent Claim
29 words
A system as defined in claim 5 wherein the concentration of ozone produced by said ozone generator means is in the range of 20 to 40 parts per million.
Claim 8
Dependent Claim
51 words
A system as defined in claim 6 wherein said corona generator means comprises; a second flat dielectric plate having a first surface and a second surface; a third electrode disposed on the first surface of said second plate; and a fourth electrode disposed on the second surface of said second plate.
Claim 9
Dependent Claim
20 words
A system as defined in claim 7 wherein the dielectric constant of said second dielectric plate is greater than 1000.
Claim 10
Dependent Claim
22 words
A system as defined in claim 8 wherein said corona generator means produces an electric field of 3 watts/sq. in. or greater.
Claim 11
Dependent Claim
53 words
A system as defined in claim 2 wherein said ozone generator means and said corona generator means comprise a combined ozone/corona generator means, comprising; a single dielectric member having a dielectric constant which increases from said input end to said output end; and electrode means disposed on either side of said dielectric member.
Claim 12
Dependent Claim
54 words
A system as defined in claim 10 wherein said dielectric member comprises a tubular member having an outer surface and an inner surface; said electrode means comprising; a first electrode arrangement disposed on the outer surface of said tubular member; and a second electrode arrangement disposed on the inner surface of said tubular member.
Claim 13
Dependent Claim
15 words
A system as defined in claim 11 wherein said tubular member comprises a cylindrical member.
Claim 14
Dependent Claim
88 words
A system as defined in claim 12 wherein said first electrode arrangement comprises a first outer electrode on the outer surface of said cylindrical member at said input end; and a second outer electrode disposed on the outer surface of said cylindrical member at said output end; and said second electrode arrangement comprises a first inner electrode disposed on the inner surface of said cylindrical member at said input end; and a second inner electrode disposed on the inner surface of said cylindrical member at said output end.
Claim 15
Dependent Claim
50 words
A system as defined in claim 10 wherein said dielectric member comprises a flat plate having a top side and a bottom side; a first electrode arrangement disposed on the top side of said flat plate; and a second electrode arrangement disposed on the bottom side of said flat plate.
Claim 16
Dependent Claim
84 words
A system as defined in claim 14 wherein said first electrode arrangement comprises a first top electrode disposed on said top side of said plate at said input end and a second top electrode disposed on the top side of said flat plate at said output end; and said second electrode arrangement comprises a first bottom electrode disposed on the bottom side of said flat plate adjacent said input end and a second bottom electrode disposed on said bottom side adjacent said output end.
Claim 17
Dependent Claim
115 words
An air purifier system, comprising: a closed container having an input end, for receiving impure air, and an output end through which purified air is expelled; means for drawing impure air into said closed container at said input end thereof; corona generator means inside said closed container adjacent said input end thereof; whereby, said impure air drawn in at said input end passes over said corona generator means to provide purified air purified by the corona generated by said corona generator means; said purified air being expelled out of said second end of said closed container; said corona generator means including a dielectric made of a material having a dielectric constant of 1000 or greater.
Claim 18
Dependent Claim
115 words
An air purifier system, comprising: a closed container having an input end, for receiving impure air, and an output end through which purified air is expelled; means for drawing impure air into said closed container at said input end thereof; corona generator means inside said closed container adjacent said input end thereof; whereby, said impure air drawn in at said input end passes over said corona generator means to provide purified air purified by the corona generated by said corona generator means; said purified air being expelled out of said second end of said closed container; said corona generator means including a dielectric made of a material having a dielectric constant of 1000 or greater.
Claim 19
Dependent Claim
50 words
A system as defined in claim 16 wherein said corona generator means comprises; a flat dielectric plate having a first surface and a second surface; a first electrode disposed on the first surface of said second plate; and a second electrode disposed on the second surface of said second plate.
Claim 20
Dependent Claim
19 words
A system as defined in claim 17 wherein the dielectric constant of said dielectric plate is greater than 1000.
Claim 21
Dependent Claim
55 words
A combination ozone/corona generator means, comprising: a single dielectric member having a dielectric constant which increases from one end to the other end thereof; said dielectric member being made of a material having a dielectric constant of 1000 or greater at said other end; and electrode means disposed on either side of said dielectric member.
Claim 22
Dependent Claim
55 words
A combination ozone/corona generator means, comprising: a single dielectric member having a dielectric constant which increases from one end to the other end thereof; said dielectric member being made of a material having a dielectric constant of 1000 or greater at said other end; and electrode means disposed on either side of said dielectric member.
Claim 23
Dependent Claim
54 words
A system as defined in claim 19 wherein said dielectric member comprises a tubular member having an outer surface and an inner surface; said electrode means comprising: a first electrode arrangement disposed on the outer surface of said tubular member; and a second electrode arrangement disposed on the inner surface of said tubular member.
Claim 24
Dependent Claim
15 words
A system as defined in claim 20 wherein said tubular member comprises a cylindrical member.
Claim 25
Dependent Claim
88 words
A system as defined in claim 21 wherein said first electrode arrangement comprises a first outer electrode on the outer surface of said cylindrical member at said first end; and a second outer electrode disposed on the outer surface of said cylindrical member at said second end; and said second electrode arrangement comprises a first inner electrode disposed on the inner surface of said cylindrical member at said first end; and a second inner electrode disposed on the inner surface of said cylindrical member at said second end.
Claim 26
Dependent Claim
50 words
A system as defined in claim 19 wherein said dielectric member comprises a flat plate having a top side and a bottom side; a first electrode arrangement disposed on the top side of said flat plate; and a second electrode arrangement disposed on the bottom side of said flat plate.
Claim 27
Dependent Claim
84 words
A system as defined in claim 23 wherein said first electrode arrangement comprises a first top electrode disposed on said top side of said plate at said first end and a second top electrode disposed on the top side of said flat plate at said second end; and said second electrode arrangement comprises a first bottom electrode disposed on the bottom side of said flat plate adjacent said first end and a second bottom electrode disposed on said bottom side adjacent said second end.
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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) | 1995-02-10 | 1995-08-12 | 1996-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-10 | 1999-08-12 | 2000-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-10 | 2003-08-12 | 2004-02-11 | $7700.00 | Window Closed / Lapsed |