US2810818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding of low alloy steel
Assignee: Airco Inc
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Filing: 1957-05-16
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Granted: 1957-10-22
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Expires: 1977-05-16
Abstract
No abstract record available.
Inventors
- 👤 Gilbert R Rothschild
- 👤 Craig R Sibley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:29
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
THE METHOD OF WELDING A FERROUS METAL WORKPIECE COMPRISED OF, BY WEIGHT, .15% TO .30% CARBON; ABOUT 2-5% OF OTHER ALLOYING ELEMENTS RESULTING FROM THE INCORPORATION OF ABOUT .80% TO 1.50% MANGANESE; .22% TO .70% SILICON; .04% TO .95% CHROMIUM; .05% TO 1.00% NICKEL; .17% TO .60% MOLBDENUM AND THE REMAINDER BEING SUBSTANTIALLY IRON; SAID METHOD COMPRISING ESTABLISHING A DIRECT CURRENT REVERSE POLARITY ELECTRIC ARC BETWEEN SAID FERROUS METAL WORKPIECE AND CONSUMABLE FERROUS ELECTRODE CONTAINING, BY WEIGHT, .04% TO .38% CARBON; 1.20% TO 1.50% MANGANESE; .30% TO .60% SILICON; 1.10% TO 1.30% NICKEL; .10% TO .20% VANADIUM; AND .30% TO .55% MOLYBDENUM; BLANKETING SAID ARC, THE CONSUMING END OF SAID ELECTODE, AND THE WELDING POOL FORMED ON SAID WORKPIECE WITH A NON-TURBULENT STREAM OF 99% OF ARGON-1% OXYGEN GAS TO EXCLUDE AIR FROM SAID POOL AND SAID CONSUMING END; AND ADVANCING SAID ELECTRODE TO MAINTAIN THE ARC, AS ELECTRODE MATERIAL IS TRANSFERRED FROM THE ELECTRODE TO SAID METAL, SO THAT A WELD HAVING A HIGH YIELD STRENGTH AND BEING RESISTANT TO IMPACT IS FORMED
Claim 2
Independent Claim
174 words
THE METHOD OF WELDING A FERROUS METAL WORKPIECE COMPRISED OF, BY WEIGHT, .15% TO .30% CARBON; ABOUT 2-5% OF OTHER ALLOYING ELEMENTS RESULTING FROM THE INCORPORATION OF ABOUT .80% TO 1.50% MANGANESE; .22% TO .70% SILICON; .04% TO .95% CHROMIUM; .05% TO 1.00% NICKEL; .17% TO .60% MOLBDENUM AND THE REMAINDER BEING SUBSTANTIALLY IRON; SAID METHOD COMPRISING ESTABLISHING A DIRECT CURRENT REVERSE POLARITY ELECTRIC ARC BETWEEN SAID FERROUS METAL WORKPIECE AND CONSUMABLE FERROUS ELECTRODE CONTAINING, BY WEIGHT, .04% TO .38% CARBON; 1.20% TO 1.50% MANGANESE; .30% TO .60% SILICON; 1.10% TO 1.30% NICKEL; .10% TO .20% VANADIUM; AND .30% TO .55% MOLYBDENUM; BLANKETING SAID ARC, THE CONSUMING END OF SAID ELECTODE, AND THE WELDING POOL FORMED ON SAID WORKPIECE WITH A NON-TURBULENT STREAM OF 99% OF ARGON-1% OXYGEN GAS TO EXCLUDE AIR FROM SAID POOL AND SAID CONSUMING END; AND ADVANCING SAID ELECTRODE TO MAINTAIN THE ARC, AS ELECTRODE MATERIAL IS TRANSFERRED FROM THE ELECTRODE TO SAID METAL, SO THAT A WELD HAVING A HIGH YIELD STRENGTH AND BEING RESISTANT TO IMPACT IS FORMED
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) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |