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US2908801A
Expired / Lapsed
US
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Fusion welding of metals
Assignee: BOC Group Ltd
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Filing: 1957-01-28
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Granted: 1959-10-13
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Expires: 1977-01-28
Abstract
No abstract record available.
Inventors
- 👤 Cresswell Robert Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:24
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A METHOD OF FUSION WELDING OVERLAPPING PLATES OF METALS OR ALLOYS HAVING A REFRACTORY OXIDE SKIN, BY MEANS OF AN ELECTRIC ARC SHIELDED BY A PROTECTIVE GAS AND ESTABLISHED BETWEEN A NON-CONSUMABLE ELECTRODE AND THE OVERLAPPING PLATES OF METALS OR ALLOYS TO BE WELDED WHICH INCLUDES THE STEPS OF SUBJECTING METAL IN THE WELD ZONE TO VIBRATIONS OF A FREQUENCY GREATER THAN 10 CYCLES PER SECOND
Claim 2
Independent Claim
66 words
A METHOD OF FUSION WELDING OVERLAPPING PLATES OF METALS OR ALLOYS HAVING A REFRACTORY OXIDE SKIN, BY MEANS OF AN ELECTRIC ARC SHIELDED BY A PROTECTIVE GAS AND ESTABLISHED BETWEEN A NON-CONSUMABLE ELECTRODE AND THE OVERLAPPING PLATES OF METALS OR ALLOYS TO BE WELDED WHICH INCLUDES THE STEPS OF SUBJECTING METAL IN THE WELD ZONE TO VIBRATIONS OF A FREQUENCY GREATER THAN 10 CYCLES PER SECOND
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) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |