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US2883857A
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Apparatus for measuring oxygen content
Assignee: Beckman Coulter Inc
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Filing: 1955-01-31
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Granted: 1959-04-28
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Expires: 1975-01-31
Abstract
No abstract record available.
Inventors
- 👤 Louis C Thayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:27
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A NEW AND IMPROVED DEVICE FOR DETERMINING THE OXYGEN CONTENT OF GAS COMPOSITIONS CONTAINING OXYGEN, WHICH COMPRISES: A FIRST ANALYSIS CELL; FIRST ELECTRICAL HEATING MEANS DISPOSED WITHIN SAID CELL; A TEMPERATURESENSING MEANS POSITIONED ADJACENT TO SAID FIRST ELECTRICAL HEATING MEANS; A SECOND ANALYSIS CELL; A SECOND ELECTRICAL HEATING MEANS DISPOSED WITHIN SAID SECOND ANALYSIS CELL; MEANS FOR SUPPLYING A MAGNETIC FIELD ADJACENT TO ONE OF SAID ELECTRICAL HEATING MEANS; MEANS FOR CONNECTING SAID HEATING MEANS INTO AN ELECTRICAL CIRCUIT MEANS FOR DETERMINING THE RESPECTIVE POWER CONSUMPTIONS OF SAID HEATING MEANS AS A MEASURE OF SAID OXYGEN CONTENT; AND MEANS CONNECTED TO SAID TEMPERATURE-SENSING MEANS TO AUTOMATICALLY REGULATE THE POWER SUPPLIED SAID HEATING MEANS SO THAT THE GAS TEMPERATURE AT SAID TEMPERATURESENSING ELEMENT REMAINS SUBSTANTIALLY CONSTANT.
Claim 2
Dependent Claim
125 words
A NEW AND IMPROVED DEVICE FOR DETERMINING THE OXYGEN CONTENT OF GAS COMPOSITIONS CONTAINING OXYGEN, WHICH COMPRISES: A FIRST ANALYSIS CELL; FIRST ELECTRICAL HEATING MEANS DISPOSED WITHIN SAID CELL; A TEMPERATURESENSING MEANS POSITIONED ADJACENT TO SAID FIRST ELECTRICAL HEATING MEANS; A SECOND ANALYSIS CELL; A SECOND ELECTRICAL HEATING MEANS DISPOSED WITHIN SAID SECOND ANALYSIS CELL; MEANS FOR SUPPLYING A MAGNETIC FIELD ADJACENT TO ONE OF SAID ELECTRICAL HEATING MEANS; MEANS FOR CONNECTING SAID HEATING MEANS INTO AN ELECTRICAL CIRCUIT MEANS FOR DETERMINING THE RESPECTIVE POWER CONSUMPTIONS OF SAID HEATING MEANS AS A MEASURE OF SAID OXYGEN CONTENT; AND MEANS CONNECTED TO SAID TEMPERATURE-SENSING MEANS TO AUTOMATICALLY REGULATE THE POWER SUPPLIED SAID HEATING MEANS SO THAT THE GAS TEMPERATURE AT SAID TEMPERATURESENSING ELEMENT REMAINS SUBSTANTIALLY CONSTANT.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |