US3127490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extinguishing device for electrical arcs
Assignee: Merlin Gerin SA
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Filing: 1961-07-03
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Granted: 1964-03-31
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Expires: 1981-07-03
Abstract
No abstract record available.
Inventors
- 👤 Latour Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:59
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/30; H01H9/34; H01H9/341
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN A DEVICE FOR EXTINGUISHING AN ELECTRIC ARC DRAWN BETWEEN SEPARABLE CONTACT MEMBERS, FIRST INSULATING PLATES HAVING ON EACH OF TWO OPPOSED FACES CONDUCTIVE MEANS CONNECTED TO EACH OTHER AT THE LOWER END OF SAID PLATES AND EXTENDING UPWARDLY TO A PREDETERMINED LEVEL, SECOND INSULATING PLATES HAVING A NOTCHED PORTION EXTENDING UPWARDLY FROM THE LOWER EDGE OF SAID SECOND PLATES, EACH SECOND PLATE BEING DISPOSED BETWEEN TWO ADJACENT FIRST PLATES, SAID FIRST AND SAID SECOND PLATES BEING DISPOSED FACE TO FACE AND TRANSVERSELY OF THE ESTABLISHED ARC, CONDUCTIVE MEMBER CONNECTED TO SAID SECOND INSULATING PLATES AND EXTENDING UPWARDLY FROM THE INNER END OF THE NOTCHED PORTIONS AND SPACING MEANS BETWEEN TWO SUCCESSIVE IN-
Claim 2
Dependent Claim
113 words
IN A DEVICE FOR EXTINGUISHING AN ELECTRIC ARC DRAWN BETWEEN SEPARABLE CONTACT MEMBERS, FIRST INSULATING PLATES HAVING ON EACH OF TWO OPPOSED FACES CONDUCTIVE MEANS CONNECTED TO EACH OTHER AT THE LOWER END OF SAID PLATES AND EXTENDING UPWARDLY TO A PREDETERMINED LEVEL, SECOND INSULATING PLATES HAVING A NOTCHED PORTION EXTENDING UPWARDLY FROM THE LOWER EDGE OF SAID SECOND PLATES, EACH SECOND PLATE BEING DISPOSED BETWEEN TWO ADJACENT FIRST PLATES, SAID FIRST AND SAID SECOND PLATES BEING DISPOSED FACE TO FACE AND TRANSVERSELY OF THE ESTABLISHED ARC, CONDUCTIVE MEMBER CONNECTED TO SAID SECOND INSULATING PLATES AND EXTENDING UPWARDLY FROM THE INNER END OF THE NOTCHED PORTIONS AND SPACING MEANS BETWEEN TWO SUCCESSIVE IN-
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) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |