Patent EP0395032A2 successfully refreshed from Google Patents.
US2838431A
Expired / Lapsed
US
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Method and apparatus for thermochemical metal scarfing
Assignee: Union Carbide Corp
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Filing: 1953-05-26
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Granted: 1958-06-10
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Expires: 1973-05-26
Abstract
No abstract record available.
Inventors
- 👤 Allmang William
- 👤 Carl E Hartmann
- 👤 Ivan P Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:07
CPC Classifications
B; B23; B23K; B23K7/00; B23K7/06; Y; Y10; Y10S; Y10S239/00; Y10S239/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
IN A PROCESS FOR THERMOCHEMICALLY SCARFING METAL BODIES, DISCHARGING A SHEET-LIKE STREAM OF OXIDIZING GAS ONTO A REACTION ZONE EXTENDING ACROSS THE ENTIRE TRANSVERSE EXTENT OF THE SURFACE OF A METAL BODY AND AT AN ACUTE ANGLE OF INPINGEMENT TO THE WORK SURFACE OF SAID METAL BODY, CONFINNG AND SHEET-LIKE STREAM OF OXIDIZING GAS BETWEEN UPPER AND LOWER SPACED APART SURFACES LATERALLY CONTINUOUS FOR THE ENTIRE TRANSVERSE EXTENT OF THE SURFACE OF SAID BODY, DISCHARGING A ROW OF JETS OF PREHEAT FUEL GAS AT AN ACUTE ANGLE TO SAID OXIDIZING GAS STREAM ONTO SAID REACTION ZONE FROM A ROW OF ORIFICES AHEAD OF AT LEAST ONE OF SAID SURFACES, AND SUPPLYING PREHEAT OXIDIZING GAS FROM SAID SHEET-LIKE STREAM OF OXIDIZING GAS TO SUPPORT COMBUSTION OF SAID JETS OF FUEL GAS AND PRODUCE POST-MIXED PREHEAT FLAMES THEREFROM.
Claim 2
Dependent Claim
136 words
IN A PROCESS FOR THERMOCHEMICALLY SCARFING METAL BODIES, DISCHARGING A SHEET-LIKE STREAM OF OXIDIZING GAS ONTO A REACTION ZONE EXTENDING ACROSS THE ENTIRE TRANSVERSE EXTENT OF THE SURFACE OF A METAL BODY AND AT AN ACUTE ANGLE OF INPINGEMENT TO THE WORK SURFACE OF SAID METAL BODY, CONFINNG AND SHEET-LIKE STREAM OF OXIDIZING GAS BETWEEN UPPER AND LOWER SPACED APART SURFACES LATERALLY CONTINUOUS FOR THE ENTIRE TRANSVERSE EXTENT OF THE SURFACE OF SAID BODY, DISCHARGING A ROW OF JETS OF PREHEAT FUEL GAS AT AN ACUTE ANGLE TO SAID OXIDIZING GAS STREAM ONTO SAID REACTION ZONE FROM A ROW OF ORIFICES AHEAD OF AT LEAST ONE OF SAID SURFACES, AND SUPPLYING PREHEAT OXIDIZING GAS FROM SAID SHEET-LIKE STREAM OF OXIDIZING GAS TO SUPPORT COMBUSTION OF SAID JETS OF FUEL GAS AND PRODUCE POST-MIXED PREHEAT FLAMES THEREFROM.
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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) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |