Patent US3417217A successfully refreshed from Google Patents.
US3417217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air blast circuit breaker
Assignee: ABB Norden Holding AB
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Filing: 1966-04-14
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Granted: 1968-12-17
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Expires: 1986-04-14
Abstract
No abstract record available.
Inventors
- 👤 Forwald Haakon
- 👤 Pucher Walter
- 👤 Sindahl Karl Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:57
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/70; H01H33/02; H01H33/04; H01H33/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A INTERRUPTER STRUCTURE FOR AIR BLAST CIRCUIT BREAKERS COMPRISING A CONDUCTIVE HOUSING FILLED WITH HIGH PRESSURE GAS; FIRST, SECOND AND THIRD PAIRS OF CONTACTS SUPPORTED WITHIN SAID INTERRUPTER; FIRST AND SECOND RESISTORS SUPPORTED WITHIN SAID CONDUCTIVE HOUSING; SAID SECOND PAIR OF CONTACTS BEING CONNECTD IN SERIES WITH SAID FIRST RESISTOR; SAID SECOND PAIR OF CONTACTS AND SAID FIRST RESISTOR BEING CONNECTED IN PARALLEL WITH SAID FIRST PAIR OF CONTACTS; SAID THIRD PAIR OF CONTACTS BEING CONNECTED IN SERIES WITH SAID SECOND RESISTOR; SAID THIRD PAIR OF CONTACTS AND SAID SECOND RESISTOR BEING CONNECTED IN PARALLEL WITH SAID FIRST RESISTOR; ONE CONTACT OF EACH SAID FIRST, SECOND AND THIRD PAIRS OF CONTACTS BEING MOVABLE BETWEEN AN ENGAGED AND DISENGAGED POSITION WITH RESPECT TO THE OTHER
Claim 2
Dependent Claim
124 words
A INTERRUPTER STRUCTURE FOR AIR BLAST CIRCUIT BREAKERS COMPRISING A CONDUCTIVE HOUSING FILLED WITH HIGH PRESSURE GAS; FIRST, SECOND AND THIRD PAIRS OF CONTACTS SUPPORTED WITHIN SAID INTERRUPTER; FIRST AND SECOND RESISTORS SUPPORTED WITHIN SAID CONDUCTIVE HOUSING; SAID SECOND PAIR OF CONTACTS BEING CONNECTD IN SERIES WITH SAID FIRST RESISTOR; SAID SECOND PAIR OF CONTACTS AND SAID FIRST RESISTOR BEING CONNECTED IN PARALLEL WITH SAID FIRST PAIR OF CONTACTS; SAID THIRD PAIR OF CONTACTS BEING CONNECTED IN SERIES WITH SAID SECOND RESISTOR; SAID THIRD PAIR OF CONTACTS AND SAID SECOND RESISTOR BEING CONNECTED IN PARALLEL WITH SAID FIRST RESISTOR; ONE CONTACT OF EACH SAID FIRST, SECOND AND THIRD PAIRS OF CONTACTS BEING MOVABLE BETWEEN AN ENGAGED AND DISENGAGED POSITION WITH RESPECT TO THE OTHER
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) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |