Patent US2904718A successfully refreshed from Google Patents.
US2904718A
Expired / Lapsed
US
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Method for controlling arc length
Assignee: Titanium Metals Corp
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Filing: 1958-06-05
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Granted: 1959-09-15
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Expires: 1978-06-05
Abstract
No abstract record available.
Inventors
- 👤 Donald E Cooper
- 👤 Elmer D Dilling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:45
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02; H05B7/144; H05B7/148; H05B7/152; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A METHOD FOR CONTROLLING THE TRAVEL OF A CONSUMABLE METALLIC ELECTRODE TO MAINTAIN A SHORT ARC BETWEEN SAID ELECTRODE AND A POOL OF MOLTEN METAL FROM SAID ELECTRODE IN A CRUCIBLE WHICH COMPRISES; PASSING ELECTRIC CURRENT AND ESTABLISHING AN ARC BETWEEN SAID ELECTRODE AND METAL IN SAID CRUCIBLE, THEREBY TO FORM A POOL OF MOLTEN METAL FROM SAID ELECTRODE IN SAID CRUCIBLE, LOWERING SAID ELECTRODE UNTIL THE BOTTOM OF SAID ELECTRODE CONTACTS THE POOL OF MOLTEN METAL, THEREBY SHORT-CIRCUITING AND EXTINGUISH-
Claim 2
Independent Claim
81 words
A METHOD FOR CONTROLLING THE TRAVEL OF A CONSUMABLE METALLIC ELECTRODE TO MAINTAIN A SHORT ARC BETWEEN SAID ELECTRODE AND A POOL OF MOLTEN METAL FROM SAID ELECTRODE IN A CRUCIBLE WHICH COMPRISES; PASSING ELECTRIC CURRENT AND ESTABLISHING AN ARC BETWEEN SAID ELECTRODE AND METAL IN SAID CRUCIBLE, THEREBY TO FORM A POOL OF MOLTEN METAL FROM SAID ELECTRODE IN SAID CRUCIBLE, LOWERING SAID ELECTRODE UNTIL THE BOTTOM OF SAID ELECTRODE CONTACTS THE POOL OF MOLTEN METAL, THEREBY SHORT-CIRCUITING AND EXTINGUISH-
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) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |