Patent US3215499A successfully refreshed from Google Patents.
US3215499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for detecting the presence of organic gases and vapours
Assignee: Orica Ltd
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Filing: 1961-11-16
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Granted: 1965-11-02
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Expires: 1981-11-16
Abstract
No abstract record available.
Inventors
- 👤 Dewar Robert Alfred
- 👤 Maier Volker Elmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:31
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/62; G01N27/626; F; F23; F23N; F23N5/00; F23N5/02; F23N5/12; F23N5/126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
APPARATUS FOR DETECTING QUANTITATIVELY THE PRESENCE OF ORGANIC GASES AND VAPOURS IN A TEST GAS, COMPRISING: (1) A BURNER ASSEMBLY; (2) MEANS FOR SUPPLYING GASEOUS FUEL WHICH INCLUDES AS THE SOLE COMBUSTIBLE CONSTITUENT HYDROGEN GAS; (3) MEANS FOR FEEDING THE TEST GAS TO THE COMBUSTION ZONE OF SAID BURNER ASSEMLBY; (4) MEANS FOR EXCLUDING DUST AND ORGANIC GASES AND VAPOURS OTHER THAN THOSE INCLUDED IN SAID TEST GAS; (5) MEANS FOR SUPPLYING A CONSTANT FLOW OF OXYGENCONTAINING COMBUSTION-SUPPORTING GAS TO SAID COMBUSTION ZONE FREE FROM DUST AND ORGANIC VAPORS; (6) SPACED FROM SAID BURNER ASSEMBLY AN ELECTRICALLYCONDUCTIVE HOLLOW COLLECTING ELECTRODE EXTENDING ABOVE, AROUND AND BELOW THE BURNER NOZZLE TO SUBTEND AT THE BURNER NOZZLE AN ANGLE GREATER THAN 180*; (7) MEANS FOR CONDUCTING THE PRODUCTS OF COMBUSTION AWAY FROM THE COMBUSTION ZONE; (8) AN ELECTRIC CIRCUIT MEASURING MEANS INCLUDING MEANS FOR
Claim 2
Dependent Claim
141 words
APPARATUS FOR DETECTING QUANTITATIVELY THE PRESENCE OF ORGANIC GASES AND VAPOURS IN A TEST GAS, COMPRISING: (1) A BURNER ASSEMBLY; (2) MEANS FOR SUPPLYING GASEOUS FUEL WHICH INCLUDES AS THE SOLE COMBUSTIBLE CONSTITUENT HYDROGEN GAS; (3) MEANS FOR FEEDING THE TEST GAS TO THE COMBUSTION ZONE OF SAID BURNER ASSEMLBY; (4) MEANS FOR EXCLUDING DUST AND ORGANIC GASES AND VAPOURS OTHER THAN THOSE INCLUDED IN SAID TEST GAS; (5) MEANS FOR SUPPLYING A CONSTANT FLOW OF OXYGENCONTAINING COMBUSTION-SUPPORTING GAS TO SAID COMBUSTION ZONE FREE FROM DUST AND ORGANIC VAPORS; (6) SPACED FROM SAID BURNER ASSEMBLY AN ELECTRICALLYCONDUCTIVE HOLLOW COLLECTING ELECTRODE EXTENDING ABOVE, AROUND AND BELOW THE BURNER NOZZLE TO SUBTEND AT THE BURNER NOZZLE AN ANGLE GREATER THAN 180*; (7) MEANS FOR CONDUCTING THE PRODUCTS OF COMBUSTION AWAY FROM THE COMBUSTION ZONE; (8) AN ELECTRIC CIRCUIT MEASURING MEANS INCLUDING MEANS FOR
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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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |