US3119672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of obtaining a fuel gas of substantially constant combustion characteristics
Assignee: United States Steel Corp
•
Filing: 1959-09-30
•
Granted: 1964-01-28
•
Expires: 1979-09-30
Abstract
No abstract record available.
Inventors
- 👤 Earl H Peirce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:50
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/60; G; G05; G05D; G05D21/00; G05D21/02; F23N; F23N2221/00; F23N2221/10; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
THE METHOD OF OBTAINING A FUEL GAS HAVING A CONSTANT COMBUSTION CHARACTERISTIC EQUAL TO CWF/G**1/2 WHERE CWF INDICATES UNITS PROPORTIONAL TO LBS. OF AIR REQUIRED PER LB. OF FUEL GAS TO COMPLETELY BURN THE FUEL GAS AND G INDICATES THE SPECIFIC GRAVITY OF THE FUEL GAS, WHICH METHOD COMPRISES MIXING A FUEL GAS WITH A GAS OF DIFFERENT COMPOSITION, TAKING A RELATIVELY SMALL SAMPLE OF THE MIXED GASES OF A KNOWN AMOUNT AND PRESSURE, ADDING AN OXYGEN CONTAINING GAS OF A KNOWN AMOUNT AND PRESSURE TO SAID GAS SAMPLE, BURNING THE GAS SAMPLE AND OXYGEN CONTAINING GAS, ANALYZING THE BURNT GASES FOR OXYGEN CONTENT, AND VARYING THE PROPORTION OF THE GASES IN SAID MIXTURE WHEN THE BURNT GASES VARY FROM A GIVEN NORM OF OXYGEN CONTENT TO GIVE THE MIXED FUEL GAS THE SAID CONSTANT COMBUSTION CHARACTERISTIC.
Claim 2
Independent Claim
137 words
THE METHOD OF OBTAINING A FUEL GAS HAVING A CONSTANT COMBUSTION CHARACTERISTIC EQUAL TO CWF/G**1/2 WHERE CWF INDICATES UNITS PROPORTIONAL TO LBS. OF AIR REQUIRED PER LB. OF FUEL GAS TO COMPLETELY BURN THE FUEL GAS AND G INDICATES THE SPECIFIC GRAVITY OF THE FUEL GAS, WHICH METHOD COMPRISES MIXING A FUEL GAS WITH A GAS OF DIFFERENT COMPOSITION, TAKING A RELATIVELY SMALL SAMPLE OF THE MIXED GASES OF A KNOWN AMOUNT AND PRESSURE, ADDING AN OXYGEN CONTAINING GAS OF A KNOWN AMOUNT AND PRESSURE TO SAID GAS SAMPLE, BURNING THE GAS SAMPLE AND OXYGEN CONTAINING GAS, ANALYZING THE BURNT GASES FOR OXYGEN CONTENT, AND VARYING THE PROPORTION OF THE GASES IN SAID MIXTURE WHEN THE BURNT GASES VARY FROM A GIVEN NORM OF OXYGEN CONTENT TO GIVE THE MIXED FUEL GAS THE SAID CONSTANT COMBUSTION CHARACTERISTIC.
References Cited (Backward Citations)
US1704101A
Cited
US1708958A
Cited
US1686751A
Cited
US2260821A
Cited
US2603085A
Cited
US2697652A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |