Patent US3244842A successfully refreshed from Google Patents.
US3244842A
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Circuit interrupter
Assignee: Mitsubishi Electric Corp
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Filing: 1963-06-07
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Granted: 1966-04-05
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Expires: 1983-06-07
Abstract
No abstract record available.
Inventors
- 👤 Kameyama Sampei
- 👤 Ohkura Toshimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:57
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/60; H01H33/66; H01H33/666; H01H33/02; H01H33/28; H01H33/30; H01H33/32; H01H33/6661
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A CIRCUIT INTERRUPTING ARRANGEMENT FOR INTERRUPTING RELATIVELY HIGH RATES OF RISE OF RECOVERY VOLTAGE COMPRISING, IN COMBINATION, A VACUUM-TYPE CIRCUIT INTERRUPTER HAVING A HIGH RATE OF RISE OF VOLTAGE WITHSTANDING CHARACTERISTIC, ANOTHER CIRCUIT INTERRUPTER HAVING THE CHARACTERISTIC OF WITHSTANDING IMPRESSED VOLTAGE IN THE REGION OF PEAK AMPLITUDE OF THE RECOVERY VOLTAGE TRANSIENT, MEANS FOR ELECTRICALLY CONNECTING THE TWO CIRCUIT INTERRUPTERS IN SERIES TO ACHIEVE THEIR COMBINED VOLTAGE-WITHSTANDING CHARACTERISTICS, AND MEANS FOR EFFECTING SUBSTANTIALLY SIMULTANEOUS CONTACT OPENING MOVEMENT OF BOTH CIRCUIT INTERRUPTERS DURING CIRCUIT INTERRUPTION.
Claim 2
Dependent Claim
84 words
A CIRCUIT INTERRUPTING ARRANGEMENT FOR INTERRUPTING RELATIVELY HIGH RATES OF RISE OF RECOVERY VOLTAGE COMPRISING, IN COMBINATION, A VACUUM-TYPE CIRCUIT INTERRUPTER HAVING A HIGH RATE OF RISE OF VOLTAGE WITHSTANDING CHARACTERISTIC, ANOTHER CIRCUIT INTERRUPTER HAVING THE CHARACTERISTIC OF WITHSTANDING IMPRESSED VOLTAGE IN THE REGION OF PEAK AMPLITUDE OF THE RECOVERY VOLTAGE TRANSIENT, MEANS FOR ELECTRICALLY CONNECTING THE TWO CIRCUIT INTERRUPTERS IN SERIES TO ACHIEVE THEIR COMBINED VOLTAGE-WITHSTANDING CHARACTERISTICS, AND MEANS FOR EFFECTING SUBSTANTIALLY SIMULTANEOUS CONTACT OPENING MOVEMENT OF BOTH CIRCUIT INTERRUPTERS DURING CIRCUIT INTERRUPTION.
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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |