US3268706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal cone arc torch
Assignee: Foster Wheeler Inc
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Filing: 1963-11-29
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Granted: 1966-08-23
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Expires: 1983-11-29
Abstract
No abstract record available.
Inventors
- 👤 Laming Lindon Cyril
- 👤 Stevens Kenneth
- 👤 Stevens Alan Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:31
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A WELDING TORCH FOR INTERNAL WELDING OF TUBES TO A TUBE PLATE COMPRISING AN ELONGATED BARREL HAVING A LONGITUDINAL AXIS ADAPTED TO BE INSERTED WITHIN A HOLE OF THE TUBE PLATE, AN ELECTRODE IN THE FORM OF A DISC, MAGNETS DISPOSED ON OPPOSITE SIDES OF THE ELECTRODE MEANS CONNECTING THE ELECTRODE AND MAGNETS TO THE BARREL SO THAT THE AXIS OF THE ELECTRODE IS PARALLEL TO THE AXIS OF THE BARREL AND THE ELECTRODE IS SANDWICHED AXIALLY BETWEEN THE MAGNETS, MEANS FOR POSITIONING THE BARREL WITHIN THE TUBE PLATE SO THAT THE ELECTRODE IS AT THE LEVEL OF THE JUNCTION BETWEEN THE TUBE AND THE TUBE PLATE, AND MEANS FOR SUPPLYING CURRENT TO THE ELECTRODE SO THAT AN ARC IS STRUCK BETWEEN THE ELECTRODE AND THE JUNCTION AT WHICH THE WELD IS TO BE MADE, THE MAGNETS PROVIDING A MAGNETIC FIELD BY WHICH THE ARC TRAVELS AROUND THE ELECTRODE AT A HIGH SPEED.
Claim 2
Dependent Claim
153 words
A WELDING TORCH FOR INTERNAL WELDING OF TUBES TO A TUBE PLATE COMPRISING AN ELONGATED BARREL HAVING A LONGITUDINAL AXIS ADAPTED TO BE INSERTED WITHIN A HOLE OF THE TUBE PLATE, AN ELECTRODE IN THE FORM OF A DISC, MAGNETS DISPOSED ON OPPOSITE SIDES OF THE ELECTRODE MEANS CONNECTING THE ELECTRODE AND MAGNETS TO THE BARREL SO THAT THE AXIS OF THE ELECTRODE IS PARALLEL TO THE AXIS OF THE BARREL AND THE ELECTRODE IS SANDWICHED AXIALLY BETWEEN THE MAGNETS, MEANS FOR POSITIONING THE BARREL WITHIN THE TUBE PLATE SO THAT THE ELECTRODE IS AT THE LEVEL OF THE JUNCTION BETWEEN THE TUBE AND THE TUBE PLATE, AND MEANS FOR SUPPLYING CURRENT TO THE ELECTRODE SO THAT AN ARC IS STRUCK BETWEEN THE ELECTRODE AND THE JUNCTION AT WHICH THE WELD IS TO BE MADE, THE MAGNETS PROVIDING A MAGNETIC FIELD BY WHICH THE ARC TRAVELS AROUND THE ELECTRODE AT A HIGH SPEED.
References Cited (Backward Citations)
US2743342A
Cited
US3211886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |