Patent US3249673A successfully refreshed from Google Patents.
US3249673A
Expired / Lapsed
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Electrode positioning apparatus
Assignee: McGraw Edison Co
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Filing: 1963-10-14
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Granted: 1966-05-03
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Expires: 1983-10-14
Abstract
No abstract record available.
Inventors
- 👤 James W Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:30
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02; H05B7/10; H05B7/109
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN AN ELECTRIC ARC FURNACE THE COMBINATION OF A FURNACE BODY CONSTRUCTED AND ARRANGED TO RECEIVE A CHARGE OF MOLTEN METAL, AN ELECTRODE, AN ELECTRODE CLAMP, REVERSIBLE DRIVE MEANS RELEASABLY CONNECTED DIRECTLY TO SAID ELECTRODE INDEPENDENTLY OF SAID CLAMP AND FOR MOVING SAID ELECTRODE TOWARD AND AWAY FROM SAID FURNACE BODY, SAID ELECTRODE CLAMP BEING INDEPENDENT OF SAID REVERSIBLE DRIVE MEANS AND INCLUDING MEANS FOR RELEASABLY FORCING SAID CLAMP INTO HIGH PRESSURE ELECTRICAL ENGAGEMENT WITH SAID ELECTRODE, AND STOP MEANS FOR LIMITING THE MOVEMENT OF SAID ELECTRODE CLAMP TOWARDS SAID FURNACE BODY INDEPENDENTLY OF SAID DRIVE MEANS AND SAID ELECTRODE SO THAT SAID ELECTRODE MAY BE MOVED BY SAID DRIVE MEANS RELATIVE TO SAID CLAMP WITHOUT RELEASING SAID HIGH PRESSURE ELEC-
Claim 2
Dependent Claim
121 words
IN AN ELECTRIC ARC FURNACE THE COMBINATION OF A FURNACE BODY CONSTRUCTED AND ARRANGED TO RECEIVE A CHARGE OF MOLTEN METAL, AN ELECTRODE, AN ELECTRODE CLAMP, REVERSIBLE DRIVE MEANS RELEASABLY CONNECTED DIRECTLY TO SAID ELECTRODE INDEPENDENTLY OF SAID CLAMP AND FOR MOVING SAID ELECTRODE TOWARD AND AWAY FROM SAID FURNACE BODY, SAID ELECTRODE CLAMP BEING INDEPENDENT OF SAID REVERSIBLE DRIVE MEANS AND INCLUDING MEANS FOR RELEASABLY FORCING SAID CLAMP INTO HIGH PRESSURE ELECTRICAL ENGAGEMENT WITH SAID ELECTRODE, AND STOP MEANS FOR LIMITING THE MOVEMENT OF SAID ELECTRODE CLAMP TOWARDS SAID FURNACE BODY INDEPENDENTLY OF SAID DRIVE MEANS AND SAID ELECTRODE SO THAT SAID ELECTRODE MAY BE MOVED BY SAID DRIVE MEANS RELATIVE TO SAID CLAMP WITHOUT RELEASING SAID HIGH PRESSURE ELEC-
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |