US5205844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Degassing apparatus
Assignee: Uniflows Co Ltd
•
Filing: 1991-11-22
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Granted: 1993-04-27
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Expires: 2011-11-22
Abstract
Abstract A degassing apparatus in which a tube made of permeable film is laid in a vacuum chamber which is decompressed and controlled by a vacuum pump, and a liquid flowing in the tube is degassed by causing gas to permeate through the wall of the tube. The degassing apparatus comprises a valve for opening the vacuum chamber toward the atmosphere and/or a permeable film which is placed between the vacuum chamber and the atmosphere and/or a valve for opening the vacuum pump to the atmosphere which is disposed between the primary valve and the primary cylinder of the vacuum pump. This degassing apparatus can be very small in size and can operate stably.
Inventors
- 👤 Hideyuki Morikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:33
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0031; B01D19/0063
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
73 words
A degassing apparatus in which a tube made of permeable film is laid in a vacuum chamber decompressed under control by a vacuum pump and a liquid flowing through said tube is degassed by causing gas to permeate the wall of said tube, characterized in that said vacuum pump can be exposed to the atmosphere by way of a valve disposed between a primary valve and a primary cylinder of said vacuum pump.
Claim 2
Dependent Claim
73 words
A degassing apparatus in which a tube made of permeable film is laid in a vacuum chamber decompressed under control by a vacuum pump and a liquid flowing through said tube is degassed by causing gas to permeate the wall of said tube, characterized in that said vacuum pump can be exposed to the atmosphere by way of a valve disposed between a primary valve and a primary cylinder of said vacuum pump.
Claim 3
Dependent Claim
99 words
A degassing apparatus in which a tube made of permeable film is laid in a vacuum chamber decompressed under control by a vacuum pump, and a liquid flowing through said tube is degassed by causing gas to permeate the wall of said tube, characterized in that a valve is disposed so that said vacuum chamber is exposable to the atmosphere, said vacuum pump is exposed to the atmosphere by way of a valve disposed between a primary valve and a primary cylinder of said vacuum pump, and a permeable film is placed between said vacuum chamber and the atmosphere.
Claim 4
Dependent Claim
99 words
A degassing apparatus in which a tube made of permeable film is laid in a vacuum chamber decompressed under control by a vacuum pump, and a liquid flowing through said tube is degassed by causing gas to permeate the wall of said tube, characterized in that a valve is disposed so that said vacuum chamber is exposable to the atmosphere, said vacuum pump is exposed to the atmosphere by way of a valve disposed between a primary valve and a primary cylinder of said vacuum pump, and a permeable film is placed between said vacuum chamber and the atmosphere.
References Cited (Backward Citations)
US3193988A
Cited
US3751879A
Cited
US4325715A
Cited
SU980760A1
Cited
JPS58219067A
Cited
US4469495A
Cited
US4696684A
Cited
JPS62132509A
Cited
US4729773A
Cited
US4986837A
Cited
JPS63258605A
Cited
US5045096A
Cited
US5009682A
Cited
US5044761A
Cited
JPH0332792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-26 | 1996-10-26 | 1997-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-26 | 2000-10-26 | 2001-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-26 | 2004-10-26 | 2005-04-27 | $7700.00 | Window Closed / Lapsed |