US3139503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extinguishing device for electrical arcs
Assignee: Merlin Gerin SA
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Filing: 1961-07-18
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Granted: 1964-06-30
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Expires: 1981-07-18
Abstract
No abstract record available.
Inventors
- 👤 Latour Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:05
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/30; H01H9/34; H01H9/341
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN A CIRCUIT BREAKER HAVING STRUCTURE FOR ESTABLISHING AN ARC AND AN ARC EXTINCTION CHAMBER, THE COMBINATION COMPRISING A PLURALITY OF PAIRS OF SPACED INSULATING PLATES IN SAID CHAMBER, THE INSULATING PLATES OF EACH PAIR HAVING ELONGATED SLOTS FORMED THEREIN AND RESPECTIVELY POSITIONED ON ALTERNATE SIDES OF THE AXIS OF SYMMETRY OF THE CHAMBER THEREBY FORMING WITH THE INTER PLATE SPACING A SINUSOIDAL ARC PASSAGE NORMAL TO THE DIRECTION OF THE
Claim 2
Dependent Claim
71 words
IN A CIRCUIT BREAKER HAVING STRUCTURE FOR ESTABLISHING AN ARC AND AN ARC EXTINCTION CHAMBER, THE COMBINATION COMPRISING A PLURALITY OF PAIRS OF SPACED INSULATING PLATES IN SAID CHAMBER, THE INSULATING PLATES OF EACH PAIR HAVING ELONGATED SLOTS FORMED THEREIN AND RESPECTIVELY POSITIONED ON ALTERNATE SIDES OF THE AXIS OF SYMMETRY OF THE CHAMBER THEREBY FORMING WITH THE INTER PLATE SPACING A SINUSOIDAL ARC PASSAGE NORMAL TO THE DIRECTION OF THE
References Cited (Backward Citations)
US2740021A
Cited
US2888539A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |