Patent US3071666A successfully refreshed from Google Patents.
US3071666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit interrupters
Assignee: Westinghouse Electric Corp
•
Filing: 1959-04-09
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Granted: 1963-01-01
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Expires: 1979-04-09
Abstract
No abstract record available.
Inventors
- 👤 James P Ellsworth
- 👤 Yorgin Nick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:34
CPC Classifications
H; H01; H01H; H01H73/00; H01H73/02; H01H73/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A CIRCUIT INTERRUPTER INCLUDING SEPARABLE CONTACTS FOR ESTABLISHING AN ARC, AN ARC CHUTE INCLUDING A PAIR OF MOLDED MATING SIDE-PLATE SECTIONS HAVING GROOVED INNER SURFACES FORMING MOUNTING SLOTS, THE MATERIAL OF SAID MOLDER ARC-CHUTE SIDE-PLATE SECTIONS BEING A COMPOSITION COMPRISING A WATER-INSOLUBLE BINDER AND AN ARC-SUPPRESSING SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF THE OXIDES AND HYDRATES OF ALUMINUM, SAID BINDER CONSTITUTING AT LEAST 5% BY WEIGHT OF THE TOTAL COMPOSITION, A PLURALITY OF SLOTTED MAGNETIC PLATES HAVING LEG PORTIONS POSITIONED WITHIN SAID MOUNTING SLOTS, EACH SIDE-PLATE SECTION HAVING AN INTEGRALLY MOLDED, LATERALLY EXTENDING, REAR CLOSING FLANGE PORTION, THE TWO REAR CLOSING FLANGE PORTION MEETING, FOLLOWING ASSEMBLY, TO CLOSE AT LEAST A REAR PORTION OF THE ARC CHUTE, EACH SIDE-PLATE SECTION
Claim 2
Dependent Claim
121 words
A CIRCUIT INTERRUPTER INCLUDING SEPARABLE CONTACTS FOR ESTABLISHING AN ARC, AN ARC CHUTE INCLUDING A PAIR OF MOLDED MATING SIDE-PLATE SECTIONS HAVING GROOVED INNER SURFACES FORMING MOUNTING SLOTS, THE MATERIAL OF SAID MOLDER ARC-CHUTE SIDE-PLATE SECTIONS BEING A COMPOSITION COMPRISING A WATER-INSOLUBLE BINDER AND AN ARC-SUPPRESSING SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF THE OXIDES AND HYDRATES OF ALUMINUM, SAID BINDER CONSTITUTING AT LEAST 5% BY WEIGHT OF THE TOTAL COMPOSITION, A PLURALITY OF SLOTTED MAGNETIC PLATES HAVING LEG PORTIONS POSITIONED WITHIN SAID MOUNTING SLOTS, EACH SIDE-PLATE SECTION HAVING AN INTEGRALLY MOLDED, LATERALLY EXTENDING, REAR CLOSING FLANGE PORTION, THE TWO REAR CLOSING FLANGE PORTION MEETING, FOLLOWING ASSEMBLY, TO CLOSE AT LEAST A REAR PORTION OF THE ARC CHUTE, EACH SIDE-PLATE SECTION
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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) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |