Patent US3301307A successfully refreshed from Google Patents.
US3301307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for detecting the configuration of a burning flame
Assignee: NGK Insulators Ltd
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Filing: 1964-08-24
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Granted: 1967-01-31
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Expires: 1984-08-24
Abstract
No abstract record available.
Inventors
- 👤 Nishigaki Susumu
- 👤 Kobayashi Kazuo
- 👤 Noda Makoto
- 👤 Kajita Takeshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:24
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/12; F23N5/123; F23N2229/00; F23N2229/16; F23N2237/00; F23N2237/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A DEVICE FOR DETECTING THE CONFIGURATION OF BURNING FLAME WHICH COMPRISES AT LEAST ONE DETECTING ELECTRODE MADE OF A HEAT RESISTING MATERIAL SELECTED FROM THE GROUP CONSISTING OF HEAT RESISTANT METAL, ELECTRICALLY CONDUCTIVE CERAMIC, A COMPOUND OF METAL AND CERAMIC, AND A COMBINATION OF SUCH MATERIALS, INSERTING AT LEAST A TIP OF SAID ELECTRODE INTO A BURNING GASEOUS FLAME ISSUED FROM A BURNER USING GASEOUS AND LIQUID FUELS, AN AMPLIFIER CONNECTED TO SAID ELECTRODE FOR AMPLIFYING THE VOLTAGE DIFFERENCE DETECTED BETWEEN SAID DETECTING ELECTRODE AND GROUND, AN INDICATING DEVICE CONNECTED TO BE OPERATED BY THE AMPLIFIED VOLTAGE DIFFERENCE, A DRIVING DEVICE FOR MOVING SAID ELECTRODE PERIODICALLY IN THE FLAMES TO DETECT THE CONFIGURATION OF FLAME AND MEANS OPERATIVELY CONNECTED TO SAID AMPLIFIER FOR ANALYZING AND SUPERVISING SAID FLAME CONFIGURATION.
Claim 2
Independent Claim
129 words
A DEVICE FOR DETECTING THE CONFIGURATION OF BURNING FLAME WHICH COMPRISES AT LEAST ONE DETECTING ELECTRODE MADE OF A HEAT RESISTING MATERIAL SELECTED FROM THE GROUP CONSISTING OF HEAT RESISTANT METAL, ELECTRICALLY CONDUCTIVE CERAMIC, A COMPOUND OF METAL AND CERAMIC, AND A COMBINATION OF SUCH MATERIALS, INSERTING AT LEAST A TIP OF SAID ELECTRODE INTO A BURNING GASEOUS FLAME ISSUED FROM A BURNER USING GASEOUS AND LIQUID FUELS, AN AMPLIFIER CONNECTED TO SAID ELECTRODE FOR AMPLIFYING THE VOLTAGE DIFFERENCE DETECTED BETWEEN SAID DETECTING ELECTRODE AND GROUND, AN INDICATING DEVICE CONNECTED TO BE OPERATED BY THE AMPLIFIED VOLTAGE DIFFERENCE, A DRIVING DEVICE FOR MOVING SAID ELECTRODE PERIODICALLY IN THE FLAMES TO DETECT THE CONFIGURATION OF FLAME AND MEANS OPERATIVELY CONNECTED TO SAID AMPLIFIER FOR ANALYZING AND SUPERVISING SAID FLAME CONFIGURATION.
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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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |