US2820945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame turbulence analyzer
Assignee: Phillips Petroleum Co
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Filing: 1953-09-14
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Granted: 1958-01-21
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Expires: 1973-09-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Ross S Marsden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:47
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/62; G01N27/626
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A CIRCUIT FOR FLAME ANALYSIS WHICH COMPRISES, IN COMBINATION, TWO PAIR OF CLOSELY SPACED ELECTRODES ADAPTED TO BE POSITIONED IN A TURBULENT FLAME ZONE AND ADAPTED TO BE MOVED KNOWN DISTANCES APART, A COMPUTER, CONSTRUCTED AND ARRANGED TO PERFORM A MATHEMATICAL OPERATION UPON A PLURALITY OF SIGNALS THERETO, MEANS FOR FEEDING CURRENT, GENERATED ACROSS THE TERMINALS OF THE TWO PAIR OF ELEC TRODES GENERATED BY RANDOM MOTION IN SAID TURBULEN FLAME, TO SAID COMPUTOR, MEANS FOR AMPLIFYING THE RESULTING SIGNAL FROM SAID COMPUTOR, MEANS FOR SQUARING THE AMPLIFIED SIGNAL, MEANS FOR RECTIFYING THE SQUARED SIGNAL, MEANS FOR AVERAGING THE RECTIFIED SIGNAL, AND MEANS FOR INDICATING THE RESULTING SIGNAL.
Claim 2
Dependent Claim
108 words
A CIRCUIT FOR FLAME ANALYSIS WHICH COMPRISES, IN COMBINATION, TWO PAIR OF CLOSELY SPACED ELECTRODES ADAPTED TO BE POSITIONED IN A TURBULENT FLAME ZONE AND ADAPTED TO BE MOVED KNOWN DISTANCES APART, A COMPUTER, CONSTRUCTED AND ARRANGED TO PERFORM A MATHEMATICAL OPERATION UPON A PLURALITY OF SIGNALS THERETO, MEANS FOR FEEDING CURRENT, GENERATED ACROSS THE TERMINALS OF THE TWO PAIR OF ELEC TRODES GENERATED BY RANDOM MOTION IN SAID TURBULEN FLAME, TO SAID COMPUTOR, MEANS FOR AMPLIFYING THE RESULTING SIGNAL FROM SAID COMPUTOR, MEANS FOR SQUARING THE AMPLIFIED SIGNAL, MEANS FOR RECTIFYING THE SQUARED SIGNAL, MEANS FOR AVERAGING THE RECTIFIED SIGNAL, AND MEANS FOR INDICATING THE RESULTING SIGNAL.
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) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |