Patent US4664752A successfully refreshed from Google Patents.
US4664752A
Expired / Lapsed
US
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Desalination system
Assignee: Industrial Filter and Pump Manufacturing Co
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Filing: 1982-11-26
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Granted: 1987-05-12
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Expires: 2002-11-26
Abstract
Abstract An aqueous saline vapor is passed through a porous mass having a temperature no less than that of the vapor and subsequently condensed to provide substantially salt-free water.
Inventors
- 👤 James F. Zievers
- 👤 Paul Eggerstedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:37
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/043; Y; Y02; Y02A; Y02A20/00; Y02A20/124
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
61 words
A method of removing a solid solute from a liquid solvent in which it is dissolved comprising the steps of forming a vapor from a solution of said solute and said solvent while maintaining the temperature of said solution below the boiling point of said solvent, and passing said vapor through a porous mass to separate said solute from said solvent.
Claim 2
Independent Claim
61 words
A method of removing a solid solute from a liquid solvent in which it is dissolved comprising the steps of forming a vapor from a solution of said solute and said solvent while maintaining the temperature of said solution below the boiling point of said solvent, and passing said vapor through a porous mass to separate said solute from said solvent.
Claim 3
Independent Claim
73 words
A method of removing salt from an aqueous saline solution, comprising the steps of forming a saline vapor from said saline solution while maintaining the temperature of said solution below the boiling point of said solution, positioning a porous desalination material in said vapor, flowing said vapor through said material and subsequently condensing the vapor drawn through said material, whereby salt is removed from said saline vapor as it passes through said material.
Claim 4
Independent Claim
73 words
A method of removing salt from an aqueous saline solution, comprising the steps of forming a saline vapor from said saline solution while maintaining the temperature of said solution below the boiling point of said solution, positioning a porous desalination material in said vapor, flowing said vapor through said material and subsequently condensing the vapor drawn through said material, whereby salt is removed from said saline vapor as it passes through said material.
Claim 5
Dependent Claim
22 words
A method according to claim 2 wherein said step of forming a saline vapor is carried out by atomizing said saline solution.
Claim 6
Dependent Claim
44 words
A method according to claim 3 comprising the steps of locating said porous desalination element within a chamber containing said saline vapor with one side of said material directly exposed to said vapor, and connecting the other side of said element to a condenser.
Claim 7
Dependent Claim
33 words
A method according to claim 4 wherein said step of flowing said saline vapor through said porous desalination material is carried out by reducing the pressure on said other side of said material.
Claim 8
Dependent Claim
25 words
A method according to claim 2 wherein the temperature of said element is maintained sufficiently high to prevent condensation of said vapor in said element.
Claim 9
Dependent Claim
109 words
Desalination apparatus comprising an enclosure having a chamber therein, atomizer means mounted in said chamber and connected to a source of salt water for filling said chamber with a saline aqueous vapor, porous desalination means mounted in said chamber with one side of said element exposed to the vapor in said chamber, said desalination means comprising a rigid porous mass of sintered particles selected from the group consisting of carbides and silicates, a condenser, and means connecting the other side of said element to said condenser, whereby vapor from said chamber is drawn through said element and salt is removed from the vapor as it passes through said element.
Claim 10
Dependent Claim
109 words
Desalination apparatus comprising an enclosure having a chamber therein, atomizer means mounted in said chamber and connected to a source of salt water for filling said chamber with a saline aqueous vapor, porous desalination means mounted in said chamber with one side of said element exposed to the vapor in said chamber, said desalination means comprising a rigid porous mass of sintered particles selected from the group consisting of carbides and silicates, a condenser, and means connecting the other side of said element to said condenser, whereby vapor from said chamber is drawn through said element and salt is removed from the vapor as it passes through said element.
Claim 11
Dependent Claim
18 words
Desalination apparatus according to claim 7 wherein said porous desalination means comprises a plurality of porous tubular elements.
Claim 12
Dependent Claim
13 words
Desalination apparatus according to claim 7 wherein said desalination element is generally planar.
Claim 13
Dependent Claim
17 words
Disalination apparatus according to claim 7 wherein said particles have a size of 200 mesh or finer.
References Cited (Backward Citations)
US867143A
Cited
US853071A
Cited
US1889617A
Cited
US2975069A
Cited
US3288685A
Cited
US3252270A
Cited
US3342703A
Cited
GB1186262A
Cited
US3483091A
Cited
US3871180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-11 | 1990-11-10 | 1991-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-11 | 1994-11-10 | 1995-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-11 | 1998-11-10 | 1999-05-12 | $7700.00 | Window Closed / Lapsed |