US2943180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel welding
Assignee: Airco Inc
•
Filing: 1958-08-29
•
Granted: 1960-06-28
•
Expires: 1978-08-29
Abstract
No abstract record available.
Inventors
- 👤 David R Kelker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:57
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/02; B23K35/0255; B23K35/0261; B23K9/00; B23K9/16; B23K9/173
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
THE METHOD OF WELDING A STEEL WORKPIECE WHICH COMPRISES ESTABLISHING AN ARC BETWEEN A WIRE CONSUMING STEEL ELECTRODE AND SAID WORKPIECE, SHIELDING SAID ARC BY MEANS OF A GAS TO EXCLUDE AIR FROM SAID ARC, SAID WIRE ELECTRODE BEING COATED ONLY WITH SUBSTANTIALLY PURE ALUMINUM, THE ALUMINUM COATING BEING DISPOSED UNIFORMLY ON SAID ELECTRODE AND CONSTITUTING BETWEEN 0.5% TO 2.0% BY WEIGHT OF SAID ELECTRODE, AND FEEDING SAID ELECTRODE TOWARD THE ARC AT HIGH SPEED AS THE ELECTRODE IS MELTED BY SAID ARC AND IS TRANSFERRED TO SAID WORKPIECE.
Claim 2
Independent Claim
89 words
THE METHOD OF WELDING A STEEL WORKPIECE WHICH COMPRISES ESTABLISHING AN ARC BETWEEN A WIRE CONSUMING STEEL ELECTRODE AND SAID WORKPIECE, SHIELDING SAID ARC BY MEANS OF A GAS TO EXCLUDE AIR FROM SAID ARC, SAID WIRE ELECTRODE BEING COATED ONLY WITH SUBSTANTIALLY PURE ALUMINUM, THE ALUMINUM COATING BEING DISPOSED UNIFORMLY ON SAID ELECTRODE AND CONSTITUTING BETWEEN 0.5% TO 2.0% BY WEIGHT OF SAID ELECTRODE, AND FEEDING SAID ELECTRODE TOWARD THE ARC AT HIGH SPEED AS THE ELECTRODE IS MELTED BY SAID ARC AND IS TRANSFERRED TO SAID WORKPIECE.
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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) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |