US3141741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burner for analytical procedures
Assignee: Gulf Research and Development Co
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Filing: 1961-09-26
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Granted: 1964-07-21
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Expires: 1981-09-26
Abstract
No abstract record available.
Inventors
- 👤 Dean C Hoel
- 👤 Benjamin M Wedner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:15
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A GAS BURNER COMPRISING A COAXIALLY MOUNTED, NESTED SERIES OF SEPARABLE TUBULAR DUCTS OF GRADUATED DIAMETER INCLUDING AT LEAST A PRIMARY OXIDANT GAS DUCT, A SECONDARY OXIDANT GAS DUCT, A SAMPLE DUCT POSITIONED BETWEEN THE PRIMARY AND SECONDARY OXIDANT GAS DUCTS AND A FUEL GAS DUCT, EACH HAVING A DISCHARGE END AND A BASE END, SAID DUCTS BEING SPACED APART AT THEIR DISCHARGE ENDS AND FORMING A GRADUATED SERIES OF CONCENTRIC, ANNULAR DISCHARGE ORIFICES LYING IN SUBSTANTIALLY THE SAME PLANE ABOUT A CENTRALLY POSITIONED DISCHARGE ORIFICE, EACH OF SAID DUCTS BEING PROVIDED WITH AN INLET ORIFICE AT ITS BASE END FOR INTRODUCTION OF ONE OF SAID PRIMARY OXIDANT GAS, SAID SECONDARY OXIDANT GAS, SAID SAMPLE, AND SAID FUEL GAS, EACH OF SAID DUCTS OTHER THAN THE CENTRAL POSITIONED DUCT OF SAID SERIES BEING REMOVABLY MOUNTED AT ITS BASE END UPON THE BASE OF THE NEXT SMALLER DUCT IN THE SERIES, SAID DUCTS BEING FORMED FROM IMPACT-RESISTANT MATERIAL THAT IS RESISTANT TO CORROSION UNDER SERVICE CONDITIONS OF THE BURNER.
Claim 2
Dependent Claim
168 words
A GAS BURNER COMPRISING A COAXIALLY MOUNTED, NESTED SERIES OF SEPARABLE TUBULAR DUCTS OF GRADUATED DIAMETER INCLUDING AT LEAST A PRIMARY OXIDANT GAS DUCT, A SECONDARY OXIDANT GAS DUCT, A SAMPLE DUCT POSITIONED BETWEEN THE PRIMARY AND SECONDARY OXIDANT GAS DUCTS AND A FUEL GAS DUCT, EACH HAVING A DISCHARGE END AND A BASE END, SAID DUCTS BEING SPACED APART AT THEIR DISCHARGE ENDS AND FORMING A GRADUATED SERIES OF CONCENTRIC, ANNULAR DISCHARGE ORIFICES LYING IN SUBSTANTIALLY THE SAME PLANE ABOUT A CENTRALLY POSITIONED DISCHARGE ORIFICE, EACH OF SAID DUCTS BEING PROVIDED WITH AN INLET ORIFICE AT ITS BASE END FOR INTRODUCTION OF ONE OF SAID PRIMARY OXIDANT GAS, SAID SECONDARY OXIDANT GAS, SAID SAMPLE, AND SAID FUEL GAS, EACH OF SAID DUCTS OTHER THAN THE CENTRAL POSITIONED DUCT OF SAID SERIES BEING REMOVABLY MOUNTED AT ITS BASE END UPON THE BASE OF THE NEXT SMALLER DUCT IN THE SERIES, SAID DUCTS BEING FORMED FROM IMPACT-RESISTANT MATERIAL THAT IS RESISTANT TO CORROSION UNDER SERVICE CONDITIONS OF THE BURNER.
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) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |