Patent US3076085A successfully refreshed from Google Patents.
US3076085A
Expired / Lapsed
US
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High current non-consumable hollow electrode
Assignee: Union Carbide Corp
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Filing: 1960-04-11
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Granted: 1963-01-29
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Expires: 1980-04-11
Abstract
No abstract record available.
Inventors
- 👤 Donald W Sundstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:20
CPC Classifications
C; C22; C22B; C22B9/00; C22B9/16; C22B9/22; C22B9/226; B; B23; B23K; B23K35/00; B23K35/02; B23K35/0205; B23K9/00; B23K9/24; B23K9/28; B23K9/285; B23K9/29; B23K9/291; H; H05; H05B; H05B7/00; H05B7/02; H05B7/06; H05B7/08; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
METHOD OF PREVENTING SUBSTANTIAL WEIGHT LOSSES FOR METAL ELECTRODES AT CURRENT LEVELS ABOVE 4000 AMPERES AND UNDER EXTENDED OPERATION FOR SEVERAL HOURS, WHICH COMPRISES PASSING A STREAM OF GAS RELATIVELY INERT WITH RESPECT TO THE ELECTRODE AT AT LEAST 25-150 C.F.H. THROUGH THE CENTRAL PASSAGE OF A HOLLOW METAL ELECTRODE AND OUT AT THE ARCING SURFACE, SURROUNDING SAID ELECTRODE WITH A SECOND STREAM OF GAS RELATIVELY INERT WITH RESPECT TO THE ELECTRODE AT AT LEAST 100-300 C.F.H., AND MAINTAINING A HIGH CURRENT ELECTRIC ARC ABOUT 4000 AMPERES BETWEEN SAID METAL ELECTRODE AND ANOTHER ELECTRODE.
Claim 2
Dependent Claim
94 words
METHOD OF PREVENTING SUBSTANTIAL WEIGHT LOSSES FOR METAL ELECTRODES AT CURRENT LEVELS ABOVE 4000 AMPERES AND UNDER EXTENDED OPERATION FOR SEVERAL HOURS, WHICH COMPRISES PASSING A STREAM OF GAS RELATIVELY INERT WITH RESPECT TO THE ELECTRODE AT AT LEAST 25-150 C.F.H. THROUGH THE CENTRAL PASSAGE OF A HOLLOW METAL ELECTRODE AND OUT AT THE ARCING SURFACE, SURROUNDING SAID ELECTRODE WITH A SECOND STREAM OF GAS RELATIVELY INERT WITH RESPECT TO THE ELECTRODE AT AT LEAST 100-300 C.F.H., AND MAINTAINING A HIGH CURRENT ELECTRIC ARC ABOUT 4000 AMPERES BETWEEN SAID METAL ELECTRODE AND ANOTHER ELECTRODE.
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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |