Patent US3214639A successfully refreshed from Google Patents.
US3214639A
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Fault clearance devices for electric power transmission and distribution polyphase feeder systems
Assignee: Electricite de France SA
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Filing: 1960-11-01
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Granted: 1965-10-26
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Expires: 1980-11-01
Abstract
No abstract record available.
Inventors
- 👤 Cabanes Leon
- 👤 Dietsch Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:53
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/22; H02H3/00; H02H3/02; H02H3/021; H02H3/023; H02H7/26; H02H7/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
AT A STATION OF A POLYPHASE ELECTRIC POWER TRANSMISSION AND DISTRIBUTION SYSTEM INCLUDING A PLURALITY OF POLYPHASE LINES, A PROTECTIVE SWITCH GEAR WHICH COMPRISES, IN COMBINATION, A MAIN BUSBAR SET, A PLURALITY OF ISOLATING SWITCHES FOR CONNECTING SAID LINES WITH THE BUSBARS OF SAID SET, RESPECTIVELY, POLYPHASE SINGLE-POLE CONTROL CIRCUITBREAKING MEANS OF HIGH BREAKING CAPACITY CONNECTED BETWEEN SAID BUSBAR SET AND THE GROUND AND NORMALLY OPEN, PROTECTIVE CONTROL MEANS RESPONSIVE TO VARIATIONS IN THE ELECTRICAL CONDITIONS IN EACH PHASE OF EACH OF SAID LINES FOR CLOSING THE CORRESPONDING POLE OF SAID CIRCUIT-BREAKING MEANS, AN AUXILIARY BUSBAR SET CONNECTED BETWEEN SAID HIGH BREAKING CAPACITY CIRCUIT-BREAKING MEANS AND THE GROUND, A GROUNDING ISOLATING SWITCH CONNECTED BETWEEN SAID AUXILIARY BUSBAR SET AND THE GROUND, A CONNECTING LINE BETWEEN SAID AUXILIARY BUSBAR SET AND EACH OF SAID POLYPHASE LINES, AND AN AUXILIARY ISOLATING SWITCH IN EACH OF SAID CONNECTING LINES.
Claim 2
Dependent Claim
146 words
AT A STATION OF A POLYPHASE ELECTRIC POWER TRANSMISSION AND DISTRIBUTION SYSTEM INCLUDING A PLURALITY OF POLYPHASE LINES, A PROTECTIVE SWITCH GEAR WHICH COMPRISES, IN COMBINATION, A MAIN BUSBAR SET, A PLURALITY OF ISOLATING SWITCHES FOR CONNECTING SAID LINES WITH THE BUSBARS OF SAID SET, RESPECTIVELY, POLYPHASE SINGLE-POLE CONTROL CIRCUITBREAKING MEANS OF HIGH BREAKING CAPACITY CONNECTED BETWEEN SAID BUSBAR SET AND THE GROUND AND NORMALLY OPEN, PROTECTIVE CONTROL MEANS RESPONSIVE TO VARIATIONS IN THE ELECTRICAL CONDITIONS IN EACH PHASE OF EACH OF SAID LINES FOR CLOSING THE CORRESPONDING POLE OF SAID CIRCUIT-BREAKING MEANS, AN AUXILIARY BUSBAR SET CONNECTED BETWEEN SAID HIGH BREAKING CAPACITY CIRCUIT-BREAKING MEANS AND THE GROUND, A GROUNDING ISOLATING SWITCH CONNECTED BETWEEN SAID AUXILIARY BUSBAR SET AND THE GROUND, A CONNECTING LINE BETWEEN SAID AUXILIARY BUSBAR SET AND EACH OF SAID POLYPHASE LINES, AND AN AUXILIARY ISOLATING SWITCH IN EACH OF SAID CONNECTING LINES.
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |