US3131284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-consumable electrode arc welding of tubing
Assignee: Carpenter Steel Co
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Filing: 1962-01-19
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Granted: 1964-04-28
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Expires: 1982-01-19
Abstract
No abstract record available.
Inventors
- 👤 Glenn J Gibson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:28
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/025; B23K9/0253
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
THE METHOD OF WELDING METAL TUBING FORMED WITH A LONGITUDINALLY EXTENDING SEAM, COMPRISING: (A) FEEDING SAID TUBING PAST A NON-CONSUMABLE WELDING ELECTRODE ARC WITH THE EDGES OF THE SEAM TO BE WELDED SUBSTANTIALLY VERTICALLY DISPOSED BELOW THE ELECTRODE, (B) MAINTAINING THE EDGES OF SAID SEAM AT THEIR CLOSEST APPROACH TO EACH OTHER AT THEIR RADIALLY INNER ENDS UNDER THE ARC AT A DISTANCE FROM EACH OTHER TO THERE FORM A GAP SUCH THAT ARC MELTED MOLTEN METAL FORMED FROM SAID TUBING ADJACENT THE RADIALLY OUTER EXTREMITY OF SAID SEAM FLOWS DOWN INTO THE SEAM OVER THE OPPOSITE EDGES THEREOF TO THE RADIALLY INNER ENDS OF SAID EDGES WITH THE MOLTEN METAL BRIDGING AND SUPPORTING ITSELF IN SAID GAP BY ITS SURFACE TENSION, (C) MAINTAINING THE CURRENT AND VOLTAGE OF THE ARC AND THE RATE OF FEED OF THE TUBING PAST THE ARC AT VALUES SUCH THAT WHEN THE SEAM EDGES ARE SQUEEZED TOGETHER AT A POINT BEYOND SAID ARC A WELD IS THEREAFTER FORMED COMPLETELY DOWN THROUGH SAID SEAM BETWEEN ITS RADIALLY OUTER AND INNER ENDS, AND (D) SQUEEZING THE EDGES OF SAID SEAM TOGETHER AT SAID POINT TO FORM SAID WELD.
Claim 2
Independent Claim
192 words
THE METHOD OF WELDING METAL TUBING FORMED WITH A LONGITUDINALLY EXTENDING SEAM, COMPRISING: (A) FEEDING SAID TUBING PAST A NON-CONSUMABLE WELDING ELECTRODE ARC WITH THE EDGES OF THE SEAM TO BE WELDED SUBSTANTIALLY VERTICALLY DISPOSED BELOW THE ELECTRODE, (B) MAINTAINING THE EDGES OF SAID SEAM AT THEIR CLOSEST APPROACH TO EACH OTHER AT THEIR RADIALLY INNER ENDS UNDER THE ARC AT A DISTANCE FROM EACH OTHER TO THERE FORM A GAP SUCH THAT ARC MELTED MOLTEN METAL FORMED FROM SAID TUBING ADJACENT THE RADIALLY OUTER EXTREMITY OF SAID SEAM FLOWS DOWN INTO THE SEAM OVER THE OPPOSITE EDGES THEREOF TO THE RADIALLY INNER ENDS OF SAID EDGES WITH THE MOLTEN METAL BRIDGING AND SUPPORTING ITSELF IN SAID GAP BY ITS SURFACE TENSION, (C) MAINTAINING THE CURRENT AND VOLTAGE OF THE ARC AND THE RATE OF FEED OF THE TUBING PAST THE ARC AT VALUES SUCH THAT WHEN THE SEAM EDGES ARE SQUEEZED TOGETHER AT A POINT BEYOND SAID ARC A WELD IS THEREAFTER FORMED COMPLETELY DOWN THROUGH SAID SEAM BETWEEN ITS RADIALLY OUTER AND INNER ENDS, AND (D) SQUEEZING THE EDGES OF SAID SEAM TOGETHER AT SAID POINT TO FORM SAID WELD.
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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |