US2907864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding of steel
Assignee: Airco Inc
•
Filing: 1954-10-21
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Granted: 1959-10-06
•
Expires: 1974-10-21
Abstract
No abstract record available.
Inventors
- 👤 Gilbert R Rothschild
- 👤 Harold R Lyons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:58
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
THE METHOD OF WELDING A STRUCTURAL-GRADE STEEL WORKPIECE CONTAINING AN APPRECIABLE QUANTITY OF OXYGEN COMPRISING ESTABLISHING A WELDING ARC BETWEEN SAID WORKPIEACE AND A CONSUMING BARE ELECTRODE CONSISTING ESSENTIALLY OF IRON CONTAINING ABOUT 0.07% TO 0.14% CARBON, ABOUT 0.90% TO 1.10% MANGANESE, AND ABOUT 0.30% TO 0.60% SILICON, THE AMOUNT OF SAID MANGANESE AND SILICON BEING SUFFICIENT TO PREVENT ANY SIGNIFICANT RIMMING ACTION IN THE WELD METAL FORMED ON SAID WORKPIEACE; BLANKETING SAID ARC, THE CONSUMING END OF SAID ELECTRODE, AND THE WELDING ZONE WITH A STREAM OF SHIELDING GAS CONTAINING AN INERT GAS AND AN OXYGEN SOURCE IN AN AMOUNT SUFFICIENT TO PROVIDE A SMALL BUT EFFECTIVE QUANTITY OF OXYGEN: ADVANCING THE ELECTRODE TO MAINTAIN THE ARC AS METAL IS TRANSFERRED FROM SAID ELECTRODE TO SAID WORKPIECE; AND EFFECTING THE TRANSFER OF SAID METAL AS A METAL SPRAY.
Claim 2
Independent Claim
139 words
THE METHOD OF WELDING A STRUCTURAL-GRADE STEEL WORKPIECE CONTAINING AN APPRECIABLE QUANTITY OF OXYGEN COMPRISING ESTABLISHING A WELDING ARC BETWEEN SAID WORKPIEACE AND A CONSUMING BARE ELECTRODE CONSISTING ESSENTIALLY OF IRON CONTAINING ABOUT 0.07% TO 0.14% CARBON, ABOUT 0.90% TO 1.10% MANGANESE, AND ABOUT 0.30% TO 0.60% SILICON, THE AMOUNT OF SAID MANGANESE AND SILICON BEING SUFFICIENT TO PREVENT ANY SIGNIFICANT RIMMING ACTION IN THE WELD METAL FORMED ON SAID WORKPIEACE; BLANKETING SAID ARC, THE CONSUMING END OF SAID ELECTRODE, AND THE WELDING ZONE WITH A STREAM OF SHIELDING GAS CONTAINING AN INERT GAS AND AN OXYGEN SOURCE IN AN AMOUNT SUFFICIENT TO PROVIDE A SMALL BUT EFFECTIVE QUANTITY OF OXYGEN: ADVANCING THE ELECTRODE TO MAINTAIN THE ARC AS METAL IS TRANSFERRED FROM SAID ELECTRODE TO SAID WORKPIECE; AND EFFECTING THE TRANSFER OF SAID METAL AS A METAL SPRAY.
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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) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |