US3200232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for electric fusion welding
Assignee: La Soudure Electrique Autogene SA
•
Filing: 1963-06-11
•
Granted: 1965-08-10
•
Expires: 1983-06-11
Abstract
No abstract record available.
Inventors
- 👤 Danhier Francois Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:21
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/362; B23K25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A PROCESS OF WELDING METALS, WHICH COMPRISES MAINTAINING AN ELECTRIC CURRENT BETWEEN AT LEAST ONE METALLIC ELECTRODE AND THE WORK TO BE WELDED TO CAUSE THE CREATION OF A WELD MOLTEN POOL, COVERING SAID POOL WITH A NONBASIC LIQUID SLAG BY MELTING NON-BASIC SLAG FORMING MATERIALS OVER THE POOL, AND FEEDING TO THE POOL AT LEAST ONE TUBULAR METALLIC ELECTRODE WHICH CONTAINS MATERIALS WHICH FORM BY FUSION A BASIC SLAG, SAID TUBULAR METALLIC ELECTRODE SUPPLYING BASIC SLAG FORMING MATERIALS IN A PROPORTION WHICH IS SO SMALL THAT THE RESULTANT SLAG PRODUCED BY MIXING THE BASIC SLAG FORMING MATERIALS WITH THE NONBASIC SLAG REMAINS NON-BASIC.
Claim 2
Dependent Claim
104 words
A PROCESS OF WELDING METALS, WHICH COMPRISES MAINTAINING AN ELECTRIC CURRENT BETWEEN AT LEAST ONE METALLIC ELECTRODE AND THE WORK TO BE WELDED TO CAUSE THE CREATION OF A WELD MOLTEN POOL, COVERING SAID POOL WITH A NONBASIC LIQUID SLAG BY MELTING NON-BASIC SLAG FORMING MATERIALS OVER THE POOL, AND FEEDING TO THE POOL AT LEAST ONE TUBULAR METALLIC ELECTRODE WHICH CONTAINS MATERIALS WHICH FORM BY FUSION A BASIC SLAG, SAID TUBULAR METALLIC ELECTRODE SUPPLYING BASIC SLAG FORMING MATERIALS IN A PROPORTION WHICH IS SO SMALL THAT THE RESULTANT SLAG PRODUCED BY MIXING THE BASIC SLAG FORMING MATERIALS WITH THE NONBASIC SLAG REMAINS NON-BASIC.
References Cited (Backward Citations)
US2511976A
Cited
US2620423A
Cited
US3051822A
Cited
US2909642A
Cited
US3024352A
Cited
US3153719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |