Patent US3620931A successfully refreshed from Google Patents.
US3620931A
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Gas analysis method
Assignee: Westinghouse Electric Corp
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Filing: 1968-11-12
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Granted: 1971-11-16
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Expires: 1988-11-12
Abstract
Abstract A method and apparatus for continuously measuring the proportion of one gas in a mixture of gases by selectively removing the one gas and thereafter measuring the partial pressure change in one or more of the remaining constituent gases brought about by removal of the one gas and thereby determining the proportion of the one gas in the original mixture.
Inventors
- 👤 Philip Reichner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:30
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/406; G01N27/407; G01N33/00; G01N33/0004; G01N33/0009; G01N33/0022; G01N33/0024
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
24 words
The method of claim 1, wherein the ratio of the total pressures of the initial mixture and of the second mixture is substantially constant.
Claim 2
Dependent Claim
17 words
The method of claim 1 wherein the total pressures of the initial and second mixtures are equal.
Claim 3
Dependent Claim
12 words
The method of claim 1 wherein the first constituent gas is CO2.
Claim 4
Dependent Claim
12 words
The method of claim 1 wherein said second constituent gas is oxygen.
Claim 5
Independent Claim
172 words
A method for continuously measuring the proportion of two constituent gases in a mixture of gases comprising continuously providing three sample streams of an initial gas mixture, selectively removing one of said constituent gases from the initial gas mixture in one of the sample streams to form a second mixture, selectively removing both of said constituent gases from the initial gas mixture in another of the sample streams to form a third mixture; passing the stream representing the initial mixture in contact with a surface of a first solid electrolyte member, passing the stream representing the second mixture in contact with the opposite surface of said first solid electrolyte member and a surface of a second solid electrolyte member, passing the stream representing the third mixture in contact with the opposite surface of said second solid electrolyte member, measuring the partial pressures of a third constituent gas in the three mixtures, comparing the partial pressures and relating the differences to the quantity of the said two constituent gases in the initial mixture.
Claim 6
Dependent Claim
20 words
The method of claim 6 wherein the partial pressure differences between initial, second, and third mixtures are denoted as voltages.
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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |