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US2838427A
Expired / Lapsed
US
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Method and apparatus for flame spiralling
Assignee: International Resistance Co
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Filing: 1956-10-23
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Granted: 1958-06-10
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Expires: 1976-10-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Alexander L Pugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:37
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/22; H01C17/24; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49099
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
THE METHOD OF BURNING A PATH OR GROOVE IN A CARBON SURFACE BODY COMPRISING THE STEPS OF CONTACTING THE SURFACE OF THE BODY WITH A HOT FLAME, PROVIDING RELATIVE MOVEMENT BETWEEN THE FLAME AND THE BODY TO PASS THE FLAME ACROSS THE SURFACE OF SAID BODY AND THEN PROVIDING A NON-OXIDIZING ATMOSPHERE OVER THE BURNT SURFACE OF SAID BODY.
Claim 2
Independent Claim
59 words
THE METHOD OF BURNING A PATH OR GROOVE IN A CARBON SURFACE BODY COMPRISING THE STEPS OF CONTACTING THE SURFACE OF THE BODY WITH A HOT FLAME, PROVIDING RELATIVE MOVEMENT BETWEEN THE FLAME AND THE BODY TO PASS THE FLAME ACROSS THE SURFACE OF SAID BODY AND THEN PROVIDING A NON-OXIDIZING ATMOSPHERE OVER THE BURNT SURFACE OF SAID BODY.
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) | 1961-06-09 | 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 |