US4285776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desalation system
Assignee: Individual
•
Filing: 1979-11-06
•
Granted: 1981-08-25
•
Expires: 1999-11-06
Abstract
Abstract Salinated or other contaminated water is fed to a chamber and sprayed into an evaporation chamber that is maintained at a relatively low pressure by means of a vacuum pump or the like. This evaporates the water so that desalinated water vapor is drawn out through the pump and discharged into a collection chamber at a higher pressure whereupon it condenses and may be discharged into a storage area The solids removed by the evaporation of the water collect at the base of the evaporation chamber and can be removed periodically through an air lock.
Inventors
- 👤 George Atwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:54
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/16; B01D1/28; B01D1/2887; B01D3/00; B01D3/06; Y; Y02; Y02A; Y02A20/00; Y02A20/124
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
160 words
A desalination system for contaminated water comprising in combination a sealed enclosure, an evaporation chamber within said enclosure, a vacuum pump connected between said evaporation chamber and said enclosure for maintaining constant negative pressure within said chamber and means conveying the contaminated water to the interior of said evaporation chamber, evaporated water vapour passing through said vacuum pump and condensing within said enclosure externally of said evaporation chamber and discharge means in said enclosure for the condensed water collected therein, said evaporation chamber being concentrically located within said enclosure, said means conveying the contaminated water to said evaporation chamber including a tank within said enclosure surrounding said evaporation chamber and spaced therefrom, means to selectively remove solids from the base of said evaporation chamber while substantially maintaining said constant negative pressure, said last mentioned means taking the form of an air lock communicating between said evaporation chamber and externally of said enclosure and maintaining a seal to said evaporation chamber.
Claim 2
Dependent Claim
160 words
A desalination system for contaminated water comprising in combination a sealed enclosure, an evaporation chamber within said enclosure, a vacuum pump connected between said evaporation chamber and said enclosure for maintaining constant negative pressure within said chamber and means conveying the contaminated water to the interior of said evaporation chamber, evaporated water vapour passing through said vacuum pump and condensing within said enclosure externally of said evaporation chamber and discharge means in said enclosure for the condensed water collected therein, said evaporation chamber being concentrically located within said enclosure, said means conveying the contaminated water to said evaporation chamber including a tank within said enclosure surrounding said evaporation chamber and spaced therefrom, means to selectively remove solids from the base of said evaporation chamber while substantially maintaining said constant negative pressure, said last mentioned means taking the form of an air lock communicating between said evaporation chamber and externally of said enclosure and maintaining a seal to said evaporation chamber.
Claim 3
Dependent Claim
55 words
The invention according to claim 1 in which said means conveying the contaminated water to the interior of said evaporation chamber includes at least one conduit extending through the wall of said evaporation chamber and connected to a supply of contaminated water and means to adjust the discharge of contaminated water within said evaporating chamber.
Claim 4
Dependent Claim
70 words
The invention according to claims 1 or 2 in which said means to adjust the discharge of contaminated water within said evaporating chamber consists of a needle valve assembly operatively connected to said conduit and extending through the wall of said enclosure for external adjustment thereof, an entrance aperture in said conduit, said needle valve controlling the effective size of said aperture and hence the quantity of water passing therethrough.
References Cited (Backward Citations)
US3278396A
Cited
US3312600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-24 | 1985-02-23 | 1985-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-24 | 1989-02-23 | 1989-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-24 | 1993-02-23 | 1993-08-25 | $7700.00 | Window Closed / Lapsed |