US3072468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for detecting changes in the heating quality of fuel gas-air mixtures and for precise control thereof
Assignee: Individual
•
Filing: 1957-12-18
•
Granted: 1963-01-08
•
Expires: 1977-12-18
Abstract
No abstract record available.
Inventors
- 👤 Ralph B Stitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:34
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/12; G05; G05D; G05D11/00; G05D11/006; Y; Y10; Y10T; Y10T436/00; Y10T436/20; Y10T436/207497; Y10T436/208339
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN THE METHOD OF DETECTING CHANGES IN HEATING QUALITY OF A STREAM OF PREMIXED FUEL GAS AND AIR WHICH INCLUDES THE STEPS OF: CONTINUOUSLY WITHDRAWING A SAMPLE OF SAID STREAM; CONTINUOUSLY MIXING THE SAMPLE WITH A PREDETERMINED PROPORTION OF AIR SUFFICIENT FOR COMBUSTION; CONTINOUSLY PASSING THE RESULTING MIXTURE INTO AN ELONGATED, SUBSTANTIALLY CYLINDRICAL, COMBUSTION ZONE; THE IMPROVEMENT COMPRISING THE STEPS OF BURNING SAID MIXTURE WITHIN SAID ZONE IN THE FORM OF A DETACHED, FREELY SUSPENDED, BODY OF FLAME MOVABLE IN ITS ENTIRETY AXIALLY ALONG SAID COMBUSTION ZONE RESPONSIVE TO CHANGES IN THE PROPORTIONS OF GAS AND AIR IN SAID MIXTURE; AND DETERMINING CHANGES IN THE HEATING QUALITY OF SAID MIXTURE ACCORDING TO THE POSITION OF SAD BODY OF FLAME IN SAID COMBUSTION ZONE.
Claim 2
Dependent Claim
123 words
IN THE METHOD OF DETECTING CHANGES IN HEATING QUALITY OF A STREAM OF PREMIXED FUEL GAS AND AIR WHICH INCLUDES THE STEPS OF: CONTINUOUSLY WITHDRAWING A SAMPLE OF SAID STREAM; CONTINUOUSLY MIXING THE SAMPLE WITH A PREDETERMINED PROPORTION OF AIR SUFFICIENT FOR COMBUSTION; CONTINOUSLY PASSING THE RESULTING MIXTURE INTO AN ELONGATED, SUBSTANTIALLY CYLINDRICAL, COMBUSTION ZONE; THE IMPROVEMENT COMPRISING THE STEPS OF BURNING SAID MIXTURE WITHIN SAID ZONE IN THE FORM OF A DETACHED, FREELY SUSPENDED, BODY OF FLAME MOVABLE IN ITS ENTIRETY AXIALLY ALONG SAID COMBUSTION ZONE RESPONSIVE TO CHANGES IN THE PROPORTIONS OF GAS AND AIR IN SAID MIXTURE; AND DETERMINING CHANGES IN THE HEATING QUALITY OF SAID MIXTURE ACCORDING TO THE POSITION OF SAD BODY OF FLAME IN SAID COMBUSTION ZONE.
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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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |