US3177326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressurized chamber arrangement for oil circuit breakers
Assignee: Associated Electrical Industries Ltd
•
Filing: 1962-07-30
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Granted: 1965-04-06
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Expires: 1982-07-30
Abstract
No abstract record available.
Inventors
- 👤 Roxburgh Albert
- 👤 Leigh Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:11
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/28; H01H33/30; H01H33/32; H01H33/34; H01H33/60; H01H33/68; H01H33/70; H01H33/72; H01H33/75; H01H33/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A CIRCUIT BREAKER HAVING A HOUSING INCLUDING AN ARCING CHAMBER HAVING SEPARABLE CONTACTS THEREIN SURROUNDED BY A FLUID INSULANT, MEANS FOR INCREASING ITS STATIC PRESSURE WITHOUT CONVERSION INTO KINETIC ENERGY BEFORE SAID CONTACTS SEPARATE, SAID MEANS BEING POSITIONED IN SAID HOUSING REMOTELY FROM SAID ARCING CHAMBER, AND OVERFLOW CHAMBER, A VALVE CONNECTING SAID OVERFLOW CHAMBER IWTH SAID ARCING CHAMBER, SAID VALVE CLOSING IN RESPONSE TO A FIRST FLUID PRESSURE IN SAID ARCING CHAMBER, AND A SAFETY VALVE IN SAID ARCING CHAMBER OPENING IN RESPONSE TO A SECOND FLUID PRESSURE, SAID SECOND FLUID PRESSURE BEING HIGHER THAN SAID FIRST FLUID PRESSURE.
Claim 2
Dependent Claim
100 words
A CIRCUIT BREAKER HAVING A HOUSING INCLUDING AN ARCING CHAMBER HAVING SEPARABLE CONTACTS THEREIN SURROUNDED BY A FLUID INSULANT, MEANS FOR INCREASING ITS STATIC PRESSURE WITHOUT CONVERSION INTO KINETIC ENERGY BEFORE SAID CONTACTS SEPARATE, SAID MEANS BEING POSITIONED IN SAID HOUSING REMOTELY FROM SAID ARCING CHAMBER, AND OVERFLOW CHAMBER, A VALVE CONNECTING SAID OVERFLOW CHAMBER IWTH SAID ARCING CHAMBER, SAID VALVE CLOSING IN RESPONSE TO A FIRST FLUID PRESSURE IN SAID ARCING CHAMBER, AND A SAFETY VALVE IN SAID ARCING CHAMBER OPENING IN RESPONSE TO A SECOND FLUID PRESSURE, SAID SECOND FLUID PRESSURE BEING HIGHER THAN SAID FIRST FLUID PRESSURE.
References Cited (Backward Citations)
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Cited
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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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |