Patent US166619A successfully refreshed from Google Patents.
Patent US3371140A successfully refreshed from Google Patents.
US3371140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical system for electric arc furnaces
Assignee: McGraw Edison Co
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Filing: 1964-11-09
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Granted: 1968-02-27
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Expires: 1984-11-09
Abstract
No abstract record available.
Inventors
- 👤 Peter J Wynne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:20
CPC Classifications
G; G02; G02B; G02B23/00; F; F27; F27D; F27D11/00; F27D11/08; G02B23/24; G02B23/2476; G02B23/2492; H; H05; H05B; H05B7/00; H05B7/02; H05B7/10; H05B7/109; H05B7/144; H05B7/148; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
IN AN ARC MELTING FURNACE, THE COMBINATION OF A PLURALITY OF VESSELS, SUPPORT MEANS, ELECTRODE DRIVE MEANS MOUNTED ON SAID SUPPORT MEANS FOR SUPPORTING AN ELECTRODE IN SAID VESSELS, SAID SUPPORT MEANS BEING MOVABLE FROM A FIRST POSITION ABOVE ONE OF SAID VESSELS TO A SECOND POSITION ABOVE ANOTHER OF SAID VESSELS, AN OPTICAL SYSTEM INCLUDING LIGHT MODIFYING MEANS MOUNTED ON SAID ELECTRODE DRIVE MEANS AND CONSTRUCTED AND ARRANGED TO RECEIVE AN ELECTRIC ARC IMAGE RAY AND TO PROJECT SAID RAY AT A PREDETERMINED ANGLE, VIEWING MEANS DISPOSED FOR RECEIVING SAID PROJECTED RAY WHEN SAID ELECTRODE DRIVE MECHANISM IS IN ITS FIRST POSITION, REFLECTING MEANS POSITIONED TO RECEIVE SAID PROJECTED RAYS WHEN SAID ELECTRODE DRIVE MECHANISM IS IN ITS SECOND POSITION, SAID REFLECTOR BEING DISPOSED IN SUCH AN ANGULAR POSITION RELATIVE TO SAID LIGHT MODIFYING MEANS AND SAID VIEWING MEANS THAT THE PROJECTED RAYS WILL REFLECTED TO SAID VIEWING MEANS.
Claim 2
Dependent Claim
150 words
IN AN ARC MELTING FURNACE, THE COMBINATION OF A PLURALITY OF VESSELS, SUPPORT MEANS, ELECTRODE DRIVE MEANS MOUNTED ON SAID SUPPORT MEANS FOR SUPPORTING AN ELECTRODE IN SAID VESSELS, SAID SUPPORT MEANS BEING MOVABLE FROM A FIRST POSITION ABOVE ONE OF SAID VESSELS TO A SECOND POSITION ABOVE ANOTHER OF SAID VESSELS, AN OPTICAL SYSTEM INCLUDING LIGHT MODIFYING MEANS MOUNTED ON SAID ELECTRODE DRIVE MEANS AND CONSTRUCTED AND ARRANGED TO RECEIVE AN ELECTRIC ARC IMAGE RAY AND TO PROJECT SAID RAY AT A PREDETERMINED ANGLE, VIEWING MEANS DISPOSED FOR RECEIVING SAID PROJECTED RAY WHEN SAID ELECTRODE DRIVE MECHANISM IS IN ITS FIRST POSITION, REFLECTING MEANS POSITIONED TO RECEIVE SAID PROJECTED RAYS WHEN SAID ELECTRODE DRIVE MECHANISM IS IN ITS SECOND POSITION, SAID REFLECTOR BEING DISPOSED IN SUCH AN ANGULAR POSITION RELATIVE TO SAID LIGHT MODIFYING MEANS AND SAID VIEWING MEANS THAT THE PROJECTED RAYS WILL REFLECTED TO SAID VIEWING MEANS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |