US2905805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas shielded arc welding
Assignee: Union Carbide Corp
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Filing: 1956-01-16
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Granted: 1959-09-22
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Expires: 1976-01-16
Abstract
No abstract record available.
Inventors
- 👤 Mcelrath Thomas
- 👤 Eugene F Gorman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:18
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/16; B23K9/167; B23K35/00; B23K35/22; B23K35/38; B23K35/383
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
PROCESS OF ARC WELDING STAINLESS STEEL SHEET AT GREATLY INCREASED WELDING SPEEDS WITHOUT UNDERCUTTING WHICH COMPRISES SPACING TO PROVIDE A GAP OF THE ODER OF 0.015 INCH BETWEEN THE PARTS TO BE WELDED SO THAT AN ARC CAN JUST "SEE" THROUGH THE GAP, SHIELDING SUCH ARC AND THE ADJACENT METAL WITH AN ANNULAR STREAM OF INERT GAS CONTAINING MORE THAN 15% AND UP TO ABOUT 100% HYDROGEN, FUSING SUCH METAL ADJACENT THE GAP WITH SAID ARC AT A SPEED OF 60 TO 100 INCHES PER MINUTE, MERGING SUCH FUSED METAL, AND PERMITTING THE SO-MERGED METAL TO SOLIDIFY TO FORM A WELD, CHARACTERIZED IN THAT SUCH HYDROGEN IS EFFECTIVELY DISCHARGED THROUGH SUCH GAP AND NOT TRAPPED IN SUCH WELD.
Claim 2
Dependent Claim
118 words
PROCESS OF ARC WELDING STAINLESS STEEL SHEET AT GREATLY INCREASED WELDING SPEEDS WITHOUT UNDERCUTTING WHICH COMPRISES SPACING TO PROVIDE A GAP OF THE ODER OF 0.015 INCH BETWEEN THE PARTS TO BE WELDED SO THAT AN ARC CAN JUST "SEE" THROUGH THE GAP, SHIELDING SUCH ARC AND THE ADJACENT METAL WITH AN ANNULAR STREAM OF INERT GAS CONTAINING MORE THAN 15% AND UP TO ABOUT 100% HYDROGEN, FUSING SUCH METAL ADJACENT THE GAP WITH SAID ARC AT A SPEED OF 60 TO 100 INCHES PER MINUTE, MERGING SUCH FUSED METAL, AND PERMITTING THE SO-MERGED METAL TO SOLIDIFY TO FORM A WELD, CHARACTERIZED IN THAT SUCH HYDROGEN IS EFFECTIVELY DISCHARGED THROUGH SUCH GAP AND NOT TRAPPED IN SUCH WELD.
References Cited (Backward Citations)
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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) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |