US4869832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radon removal method
Assignee: NORTH EAST ENVIRONMENTAL PRODUCTS Inc LEBANON NEW HAMPSHIRE A NEW HAMPSHIRE CORP
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Filing: 1987-07-13
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Granted: 1989-09-26
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Expires: 2007-07-13
Abstract
Abstract A radon removal system includes a packed mass transfer material aeration column and is sized to fit within a single story of a residential building. A residential water supply that is naturally contaminated with radioactive radon gas is connected to the top of the column. The water is preferably distributed across the top of the mass transfer packing by a coarse mist spray nozzle. The water splashes down through the packing and collects in a holding tank at the bottom of the column. Air, blown up through the column packing, comes into contact with the radon-laden water, and evaporates the radon out of the water. The radon-laden air is then vented outside the home.
Inventors
- 👤 Bruce L. Lamarre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:03
CPC Classifications
G; G21; G21F; G21F9/00; G21F9/04; G21F9/06; G21F9/12; C; C02; C02F; C02F1/00; C02F1/20; C02F2101/00; C02F2101/006
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
120 words
A method of removing radon from water without recycling, comprising: distributing radon-laden water in the upper portion of a vertically oriented hollow column containing mass transfer packing material, forcing air through said column to evaporate radon gas out of the radon-laden water as the water splashes through said packing material, venting air laden with radon evaporated from the radon-laden water out of said column, collecting water significantly purified by removal of radon as the water falls to the lower portion of said column, and pumping the collected water into a water storage container remote from the source of the radon-laden water, whereby collected and stored water is available for immediate residential use without recycling through said mass transfer packing material.
Claim 2
Independent Claim
120 words
A method of removing radon from water without recycling, comprising: distributing radon-laden water in the upper portion of a vertically oriented hollow column containing mass transfer packing material, forcing air through said column to evaporate radon gas out of the radon-laden water as the water splashes through said packing material, venting air laden with radon evaporated from the radon-laden water out of said column, collecting water significantly purified by removal of radon as the water falls to the lower portion of said column, and pumping the collected water into a water storage container remote from the source of the radon-laden water, whereby collected and stored water is available for immediate residential use without recycling through said mass transfer packing material.
Claim 3
Dependent Claim
18 words
The method of claim 1 further comprising positioning said column within a single story of a residential building.
Claim 4
Dependent Claim
18 words
The method of claim 1 further comprising pumping the radon laden water from a well to said column.
Claim 5
Dependent Claim
18 words
The method of claim 1 further comprising spraying the radon laden water upon said mass transfer packing material.
Claim 6
Dependent Claim
17 words
The method of claim 1 wherein said forced air is blown into the bottom of said column.
Claim 7
Dependent Claim
14 words
The method of claim 1 wherein said forced air is drawn through the column.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-25 | 1993-03-27 | 1993-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-25 | 1997-03-27 | 1997-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-25 | 2001-03-27 | 2001-09-26 | $7700.00 | Window Closed / Lapsed |