US3301995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric arc heating and acceleration of gases
Assignee: Union Carbide Corp
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Filing: 1963-12-02
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Granted: 1967-01-31
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Expires: 1983-12-02
Abstract
No abstract record available.
Inventors
- 👤 Richard C Eschenbach
- 👤 George M Skinner
- 👤 Raymond J Sarlitto
- 👤 Robert J Wickham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:24
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/24; H05H1/48; H05H1/50; H05H1/26; H05H1/32; H05H1/34; H05H1/3431; H05H1/3484
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
AN ELECTRIC ARC GAS HEATER COMPRISING A FIRST TUBULAR WATER-COOLED ELECTRODE HAVING CLOSURE MEANS AT ONE END THEREOF AND BEING OPEN AT THE OTHER END AND HAVING A LENGTH TO DIAMETER RATIO OF BETWEEN ABOUT 5 TO ABOUT 30; A SECOND TUBULAR WATER-COOLED ELECTRODE OPEN AT BOTH ENDS AND AXIALLY SPACED FROM THE OPEN END OF SAID FIRST ELECTRODE AND HAVING A LENGTH TO DIAMETER RATIO OF BETWEEN ABOUT 5 TO ABOUT 40, THE RATIO OF THE INSIDE DIAMETER OF SAID FIRST TUBULAR ELECTRODE TO THE INSIDE DIAMETER OF SAID SECOND TUBULAR ELECTRODE BEING BETWEEN ABOUT 2.5 TO 0.5; AND THE RATIO OF CURRENT TO INSIDE DIAMETER OF SAID SECOND ELECTRODE BEING BETWEEN ABOUT 50 AND ABOUT 2000 AMP/INCH; A NOZZLE OUTLET CARRIED BY SAID SECOND TUBULAR MEMBER AT ONE END THEREOF; A WATERCOOLED CHAMBER OF SUBSTANTIALLY GREATER DIAMETER THAN AND SURROUNDING THE SPACE BETWEEN SAID TWO ELECTRODES; A PLURALITY OF GAS INJECTION MEANS MOUNTED IN THE WALLS OF SAID CHAMBER AND INCLUDING A TUBULAR MEMBER PROVIDED WITH AN ORIFICE FOR DIRECTING THE GAS TO BE HEATED INTO SAID CHAMBER.
Claim 2
Dependent Claim
180 words
AN ELECTRIC ARC GAS HEATER COMPRISING A FIRST TUBULAR WATER-COOLED ELECTRODE HAVING CLOSURE MEANS AT ONE END THEREOF AND BEING OPEN AT THE OTHER END AND HAVING A LENGTH TO DIAMETER RATIO OF BETWEEN ABOUT 5 TO ABOUT 30; A SECOND TUBULAR WATER-COOLED ELECTRODE OPEN AT BOTH ENDS AND AXIALLY SPACED FROM THE OPEN END OF SAID FIRST ELECTRODE AND HAVING A LENGTH TO DIAMETER RATIO OF BETWEEN ABOUT 5 TO ABOUT 40, THE RATIO OF THE INSIDE DIAMETER OF SAID FIRST TUBULAR ELECTRODE TO THE INSIDE DIAMETER OF SAID SECOND TUBULAR ELECTRODE BEING BETWEEN ABOUT 2.5 TO 0.5; AND THE RATIO OF CURRENT TO INSIDE DIAMETER OF SAID SECOND ELECTRODE BEING BETWEEN ABOUT 50 AND ABOUT 2000 AMP/INCH; A NOZZLE OUTLET CARRIED BY SAID SECOND TUBULAR MEMBER AT ONE END THEREOF; A WATERCOOLED CHAMBER OF SUBSTANTIALLY GREATER DIAMETER THAN AND SURROUNDING THE SPACE BETWEEN SAID TWO ELECTRODES; A PLURALITY OF GAS INJECTION MEANS MOUNTED IN THE WALLS OF SAID CHAMBER AND INCLUDING A TUBULAR MEMBER PROVIDED WITH AN ORIFICE FOR DIRECTING THE GAS TO BE HEATED INTO SAID CHAMBER.
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) | 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 |