US4407665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid degasification device
Assignee: LASATER TECHNOLOGIES Inc 122 EAST 42ND STREET NEW YORK NEWYORK 10168 A CORP OF NEW MEXICO
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Filing: 1980-03-24
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Granted: 1983-10-04
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Expires: 2000-03-24
Abstract
Abstract A device for removing dissolved gases from liquids is provided by utilizing a tall column initially filled with liquid which is then opened at the bottom allowing the liquid level to drop forming a vacuum above the liquid level. Dissolved gases migrate to the vacuum area and the purified liquid is then drained from the bottom of the column and the process repeated. The above method of providing a vacuum allows more efficient distillation due to the lower boiling temperature resulting from the vacuum over the liq
Inventors
- 👤 Henry C. Lasater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:06
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0005; B01D19/001; B01D19/0015; C; C02; C02F; C02F1/00; C02F1/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
128 words
An apparatus for the degasification of water, said apparatus comprising: a degasification column for removal of dissolved gases which are in solution with water and having a top and a bottom, said column having a length exceeding the height of the water which would be supported within the column by atmospheric pressure when the top of the column is in substantially evacuated condition; a water reservoir; means for venting gases from the top of said column; means for selectively sealing said venting means; means for selectively draining degassed water from said column means for selectively connecting said column to said reservoir for controlling water flow therebetween; and a container under a vacuum and connected with said means for selectively draining degassed water to receive and retain degassed water.
Claim 2
Independent Claim
128 words
An apparatus for the degasification of water, said apparatus comprising: a degasification column for removal of dissolved gases which are in solution with water and having a top and a bottom, said column having a length exceeding the height of the water which would be supported within the column by atmospheric pressure when the top of the column is in substantially evacuated condition; a water reservoir; means for venting gases from the top of said column; means for selectively sealing said venting means; means for selectively draining degassed water from said column means for selectively connecting said column to said reservoir for controlling water flow therebetween; and a container under a vacuum and connected with said means for selectively draining degassed water to receive and retain degassed water.
Claim 3
Dependent Claim
16 words
The apparatus of claim 1 further comprising a heat source in operative relationship to said column.
Claim 4
Dependent Claim
38 words
The apparatus of claim 1 wherein said connecting means further comprises a first conduit connecting said reservoir and said column bottom and valve means in said first conduit to selectively drain water from said column to said reservoir.
Claim 5
Dependent Claim
37 words
The apparatus of claim 3 wherein said connecting means includes a pump for pumping water from said reservoir to said column and wherein said connecting means comprises a second conduit connecting said pump and said column top.
Claim 6
Dependent Claim
49 words
The apparatus of claim 1 wherein said drain means is located at said column bottom and wherein said connecting means further comprises a first conduit connecting said reservoir and said column bottom and valve means in said first conduit to selectively drain water from said column to said reservoir.
Claim 7
Independent Claim
94 words
A method of removing dissolved gas from solution with water, said method comprising steps of: completely filling a column with water; sealing said column; opening a drain in the bottom of said column so that the water will fall to an equilibrium level within said column defined by ambient atmospheric pressure, creating a partial vacuum in said column above said equilibrium level; allowing the water to remain undisturbed at said equilibrium level in said column while the dissolved gases move upward into the partial vacuum to degassify the water; and draining the degassed water.
Claim 8
Independent Claim
94 words
A method of removing dissolved gas from solution with water, said method comprising steps of: completely filling a column with water; sealing said column; opening a drain in the bottom of said column so that the water will fall to an equilibrium level within said column defined by ambient atmospheric pressure, creating a partial vacuum in said column above said equilibrium level; allowing the water to remain undisturbed at said equilibrium level in said column while the dissolved gases move upward into the partial vacuum to degassify the water; and draining the degassed water.
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) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |