US2862748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint for carbon electrodes
Assignee: GREAT LAKES CARBON Corp
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Filing: 1956-02-23
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Granted: 1958-12-02
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Expires: 1976-02-23
Abstract
No abstract record available.
Inventors
- 👤 Bruce L Bailey
- 👤 Leslie H Juel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:44
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02; H05B7/14; Y; Y02; Y02P; Y02P10/00; Y02P10/25; Y10; Y10S; Y10S403/00; Y10S403/05; Y10T; Y10T403/00; Y10T403/47; Y10T403/472; Y10T403/477; Y10T403/55; Y10T403/556
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
86 words
IN A CONTINUOUS-TYPE ELECTRIC-FURNACE ELECTRODE COMPRISING AT LEAST TWO COAXIALLY ALIGNED CARBON ELECTRODES HAVING OPPOSED END FACES, A CENTRAL THREADED RECESS IN EACH OF SAID FACES AND A CARBON CONNECTING MEMBER THREADED INTO EACH OF SAID RECESSES, THE IMPROVEMENT COMPRISING SAID CONNECTING MEMBER CONTAINING A LIQUEFIABLE CARBONIZABLE COMPOSITION IN AN AMOUNT TO FILL THE AVAILABLE PORES OF THE MEMBER FROM THE ENTIRE SURFACE INWARDLY FOR A DEPTH REPRESENTED BY FROM ABOUT 10 TO 75% OF THE TOTAL AVAILABLE POROSITY, THE UNFILLED INTERIORR PORES CONTAINING A GAS.
Claim 2
Dependent Claim
86 words
IN A CONTINUOUS-TYPE ELECTRIC-FURNACE ELECTRODE COMPRISING AT LEAST TWO COAXIALLY ALIGNED CARBON ELECTRODES HAVING OPPOSED END FACES, A CENTRAL THREADED RECESS IN EACH OF SAID FACES AND A CARBON CONNECTING MEMBER THREADED INTO EACH OF SAID RECESSES, THE IMPROVEMENT COMPRISING SAID CONNECTING MEMBER CONTAINING A LIQUEFIABLE CARBONIZABLE COMPOSITION IN AN AMOUNT TO FILL THE AVAILABLE PORES OF THE MEMBER FROM THE ENTIRE SURFACE INWARDLY FOR A DEPTH REPRESENTED BY FROM ABOUT 10 TO 75% OF THE TOTAL AVAILABLE POROSITY, THE UNFILLED INTERIORR PORES CONTAINING A GAS.
Claim 3
Independent Claim
102 words
A METHOD OF MANUFACTURING A CARBON CONNECTING MEMBER FOR CARBON ELECTRIC-FURNACE ELECTRODES HAVING CENTRAL THREADED RECESSES AT EACH END WHICH COMPRISES IMPREGNATING A CARBON BLANK WHOSE CONFIGURATION CONFORMS GENERALLY TO THE ELECTRODE RECESSES, SOLELY BY MEANS OF PRESSURE WITH A LIQUEFIABLE CARBONIZABLE COMPOSITION IN AN AMOUNT TO FILL THE AVAILABLE PORES OF SAID BLANK FROM THE ENTIRE SURFACE INWARDLY FOR A DEPTH REPRESENTED BY FROM ABOUT 10 TO 75% OF THE TOTAL AVAILABLE POROSITY WHILE RETAINING ENTRAPPED GAS IN THE INTERIOR UNFILLED PORES OF THE CARBON BLANK, AND MACHINING THE RESULTANT IMPREGNATED BLANK TO CONFORM TO THE THREADS OF THE ELECTRODE RECESSES.
Claim 4
Independent Claim
102 words
A METHOD OF MANUFACTURING A CARBON CONNECTING MEMBER FOR CARBON ELECTRIC-FURNACE ELECTRODES HAVING CENTRAL THREADED RECESSES AT EACH END WHICH COMPRISES IMPREGNATING A CARBON BLANK WHOSE CONFIGURATION CONFORMS GENERALLY TO THE ELECTRODE RECESSES, SOLELY BY MEANS OF PRESSURE WITH A LIQUEFIABLE CARBONIZABLE COMPOSITION IN AN AMOUNT TO FILL THE AVAILABLE PORES OF SAID BLANK FROM THE ENTIRE SURFACE INWARDLY FOR A DEPTH REPRESENTED BY FROM ABOUT 10 TO 75% OF THE TOTAL AVAILABLE POROSITY WHILE RETAINING ENTRAPPED GAS IN THE INTERIOR UNFILLED PORES OF THE CARBON BLANK, AND MACHINING THE RESULTANT IMPREGNATED BLANK TO CONFORM TO THE THREADS OF THE ELECTRODE RECESSES.
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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) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |