US3143631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric arc welding
Assignee: Airco Inc
•
Filing: 1951-01-06
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Granted: 1964-08-04
•
Expires: 1971-01-06
Abstract
No abstract record available.
Inventors
- 👤 Jesse S Sohn
- 👤 Robinson Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:49
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/16; B23K9/173
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
THE METHOD OF JOINING MATERIAL BY ARC WELDING SAID MATERIAL WITH A CONSUMABLE ELECTRODE, WHICH COMPRISES THE STEPS OF IMPRESSING A POTENTIAL TO PRODUCE AN MAINTAIN AN ARC SUFFICIENT TO MELT SAID ELECTRODE BETWEEN SAID ELECTRODE AND SAID MATERIAL, STRIKING AN ARC BETWEEN SAID ELECTRODE AND SAID MATERIAL WHILE SAID POTENTIAL IS IMPRESSED THEREBETWEEN, MAINTAINING SAID ARC SHEATHED IN AN ATMOSPHERE OF COMMERCIALLY PURE INERT GAS, AND ADDING SUFFICIENT OXYGEN TO THE ATMOSPHERE TO STABLIZE THE ARC, THE SAID METHOD BEING CHARACTERIZED BY THE FACT THAT THE SPACING BETWEEN SAID ELECTRODE AND SAID MATERIAL AND THE MAGNITUDE OF THE ARC CURRENT ARE MAINTAINED SUCH THAT THE ARC BURNS IN A NONTURBULENT ATMOSPHERE SO THAT SUBSTANTIALLY THE ONLY GAS IN ADDITION TO THE INERT GAS PRESENT IN SAID SHIELD IS SAID OXYGEN AND BY THE FURTHER FACT THAT THE QUANITY OF SAID OXYGEN IS MAINTAINED JUST SUFFICIENT TO STABILIZE THE ARC WITHOUT OXIDIZING THE WELD.
Claim 2
Independent Claim
154 words
THE METHOD OF JOINING MATERIAL BY ARC WELDING SAID MATERIAL WITH A CONSUMABLE ELECTRODE, WHICH COMPRISES THE STEPS OF IMPRESSING A POTENTIAL TO PRODUCE AN MAINTAIN AN ARC SUFFICIENT TO MELT SAID ELECTRODE BETWEEN SAID ELECTRODE AND SAID MATERIAL, STRIKING AN ARC BETWEEN SAID ELECTRODE AND SAID MATERIAL WHILE SAID POTENTIAL IS IMPRESSED THEREBETWEEN, MAINTAINING SAID ARC SHEATHED IN AN ATMOSPHERE OF COMMERCIALLY PURE INERT GAS, AND ADDING SUFFICIENT OXYGEN TO THE ATMOSPHERE TO STABLIZE THE ARC, THE SAID METHOD BEING CHARACTERIZED BY THE FACT THAT THE SPACING BETWEEN SAID ELECTRODE AND SAID MATERIAL AND THE MAGNITUDE OF THE ARC CURRENT ARE MAINTAINED SUCH THAT THE ARC BURNS IN A NONTURBULENT ATMOSPHERE SO THAT SUBSTANTIALLY THE ONLY GAS IN ADDITION TO THE INERT GAS PRESENT IN SAID SHIELD IS SAID OXYGEN AND BY THE FURTHER FACT THAT THE QUANITY OF SAID OXYGEN IS MAINTAINED JUST SUFFICIENT TO STABILIZE THE ARC WITHOUT OXIDIZING THE WELD.
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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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |