Patent US2944418A successfully refreshed from Google Patents.
US2944418A
Expired / Lapsed
US
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Instrument for gas analysis
Assignee: ABB Training Center GmbH and Co KG
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Filing: 1956-04-13
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Granted: 1960-07-12
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Expires: 1976-04-13
Abstract
No abstract record available.
Inventors
- 👤 Engelhardt Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:56
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
AN INSTRUMENT FOR DETERMING HEATING VALUES OF EST GAS SUBJECT TO VARIATIONS IN MOLECULAR HYDROGEN, CARBON MONOXIDE AND LOWER HYDROCARBONS CONTENT COMPRISING A GAS CONDUIT CONNECTED TO A SOURCE OF SAID GAS, AN OXYGEN CONDUIT CONNECTED TO THE GAS CONDUIT MEANS FOR MIXING THE GAS AND OXYGEN TO FORM AN OXYGEN MIX, A COMBUSTION CHAMBER AND COMPARISON CHAMBER EACH PROVIDED WITH OUTLET MEANS, MEANS FOR DIVIDING A STREAM OF THE MIX BETWEEN THE CHAMBERS, A PARAMAGNETIC GAS ANALYZER HAVING AT LEAST ONE PAIR OF HEATER ELEMENTS, AND RESPONSIVE TO THE DIFFERENCES BETWEEN THE PARAMAGNETIC GAS CONTENTS OF THE GASES ISSUING FROM THE RESPECTIVE CHAMBERS, AND MEANS FOR PASSING GASEOUS CONTENTS FROM THE CHAMBER TO THE ANALYZER, SAID ANALYZER BEING CALIBRATED TO READ IN TERMS OF HEATING UNITS, THE CALIBRATIONS BEING APPROXIMATELY PROPORTIONAL TO SAID DIFFERENCES IN PARAMAGNETIC GAS CONTENT OF SAID GASES ISSUING FROM THE CHAMBERS WHEN THE TEST GAS CONTAINS A MIXTURE OF MOLECULAR HYDROGEN CARBON MONOXIDE, AND LOWER HYDROCARBONS.
Claim 2
Dependent Claim
161 words
AN INSTRUMENT FOR DETERMING HEATING VALUES OF EST GAS SUBJECT TO VARIATIONS IN MOLECULAR HYDROGEN, CARBON MONOXIDE AND LOWER HYDROCARBONS CONTENT COMPRISING A GAS CONDUIT CONNECTED TO A SOURCE OF SAID GAS, AN OXYGEN CONDUIT CONNECTED TO THE GAS CONDUIT MEANS FOR MIXING THE GAS AND OXYGEN TO FORM AN OXYGEN MIX, A COMBUSTION CHAMBER AND COMPARISON CHAMBER EACH PROVIDED WITH OUTLET MEANS, MEANS FOR DIVIDING A STREAM OF THE MIX BETWEEN THE CHAMBERS, A PARAMAGNETIC GAS ANALYZER HAVING AT LEAST ONE PAIR OF HEATER ELEMENTS, AND RESPONSIVE TO THE DIFFERENCES BETWEEN THE PARAMAGNETIC GAS CONTENTS OF THE GASES ISSUING FROM THE RESPECTIVE CHAMBERS, AND MEANS FOR PASSING GASEOUS CONTENTS FROM THE CHAMBER TO THE ANALYZER, SAID ANALYZER BEING CALIBRATED TO READ IN TERMS OF HEATING UNITS, THE CALIBRATIONS BEING APPROXIMATELY PROPORTIONAL TO SAID DIFFERENCES IN PARAMAGNETIC GAS CONTENT OF SAID GASES ISSUING FROM THE CHAMBERS WHEN THE TEST GAS CONTAINS A MIXTURE OF MOLECULAR HYDROGEN CARBON MONOXIDE, AND LOWER HYDROCARBONS.
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) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |