US3100248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil circuit breaker
Assignee: ABB Norden Holding AB
•
Filing: 1960-09-06
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Granted: 1963-08-06
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Expires: 1980-09-06
Abstract
No abstract record available.
Inventors
- 👤 Forwald Haakon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:16
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/70; H01H33/72; H01H33/75
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
OIL CIRCUIT BREAKER COMPRISING MEANS FORMING AN EXTINGUISHING CHAMBER IMMERSED IN OIL, SAID CHAMBER HAVING AN UPPER WALL, A TUBULAR HOUSING PROJECTING DOWNWARDLY FROM SAID UPPER WALL, AN OIL LEVEL CHANNEL WHICH CONNECTS THE EXTINGUISHING CHAMBER WITH THE SURROUNDING OIL AT A POINT BELOW THE SAID UPPER WALL SO THAT THE EXTINGUISHING CHAMBER AND A PART OF SAID HOUSING IN THE EXTINGUISHING CHAMBER ABOVE THE OIL LEVEL FORM AN ANNULAR GAS-FILLED PRESSURE ACCUMULATING CHAMBER; AN OPENING IN THE HOUSING AT A POINT ABOVE SAID OIL LEVEL CHANNEL, A STATIONARY NOZZLE CONTACT IN SAID HOUSING; SAID EXTINGUISHING CHAMBER HAVING A BOTTOM WALL AND AN OPENING THEREIN, A PRESSURE-GENERATING CHAMBER IN THE LOWER PART OF THE HOUSING, A PIN-SHAPED CONTACT MOVABLE THROUGH SUCH OPENING IN THE BOTTOM OF THE EXTINGUISHING CHAMBER AND SUCH PRESSURE GENERATING CHAMBER TO ENGAGE SAID STATIONARY
Claim 2
Dependent Claim
138 words
OIL CIRCUIT BREAKER COMPRISING MEANS FORMING AN EXTINGUISHING CHAMBER IMMERSED IN OIL, SAID CHAMBER HAVING AN UPPER WALL, A TUBULAR HOUSING PROJECTING DOWNWARDLY FROM SAID UPPER WALL, AN OIL LEVEL CHANNEL WHICH CONNECTS THE EXTINGUISHING CHAMBER WITH THE SURROUNDING OIL AT A POINT BELOW THE SAID UPPER WALL SO THAT THE EXTINGUISHING CHAMBER AND A PART OF SAID HOUSING IN THE EXTINGUISHING CHAMBER ABOVE THE OIL LEVEL FORM AN ANNULAR GAS-FILLED PRESSURE ACCUMULATING CHAMBER; AN OPENING IN THE HOUSING AT A POINT ABOVE SAID OIL LEVEL CHANNEL, A STATIONARY NOZZLE CONTACT IN SAID HOUSING; SAID EXTINGUISHING CHAMBER HAVING A BOTTOM WALL AND AN OPENING THEREIN, A PRESSURE-GENERATING CHAMBER IN THE LOWER PART OF THE HOUSING, A PIN-SHAPED CONTACT MOVABLE THROUGH SUCH OPENING IN THE BOTTOM OF THE EXTINGUISHING CHAMBER AND SUCH PRESSURE GENERATING CHAMBER TO ENGAGE SAID STATIONARY
References Cited (Backward Citations)
CH84167A
Cited
DE581871C
Cited
DE695436C
Cited
FR878638A
Cited
GB550151A
Cited
US2389346A
Cited
FR1203659A
Cited
US2948791A
Cited
US3010003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-05 | 1967-02-04 | 1967-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-05 | 1971-02-04 | 1971-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-05 | 1975-02-04 | 1975-08-06 | $7700.00 | Window Closed / Lapsed |