US3210606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective relaying systems
Assignee: Westinghouse Electric Corp
•
Filing: 1962-02-09
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Granted: 1965-10-05
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Expires: 1982-02-09
Abstract
No abstract record available.
Inventors
- 👤 Howard J Calhoun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:17
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
AN ELECTRIC SYSTEM COMPRISING A THREE-PHASE TRANSMISSION LINE HAVING A REPLAYING STATION, COMPENSATOR MEANS FOR DERIVING FROM THE TRANSMISSION LINE AT THE RELAYING STATION SET OF DERIVED DIRECT VOLTAGES EACH CORRESPONDING TO A SEPARATE PHASE VOLTAGE ON THE TRANSMISSION LINE AT A POINT DISPLACED FROM THE RELAYING STATION, DERIVATION MEANS FOR DERIVING FROM THE TRANSMISSION LINE A SET OF DERIVED OPERATING DIRECT VOLTAGES EACH CORRESPONDING D TO A SEPARATE PHASE LINE CURRENT IN THE TRANSMISSION LINE, COMPARING MEANS COUPLED TO THE COMPENSATOR MEANS AND
Claim 2
Dependent Claim
84 words
AN ELECTRIC SYSTEM COMPRISING A THREE-PHASE TRANSMISSION LINE HAVING A REPLAYING STATION, COMPENSATOR MEANS FOR DERIVING FROM THE TRANSMISSION LINE AT THE RELAYING STATION SET OF DERIVED DIRECT VOLTAGES EACH CORRESPONDING TO A SEPARATE PHASE VOLTAGE ON THE TRANSMISSION LINE AT A POINT DISPLACED FROM THE RELAYING STATION, DERIVATION MEANS FOR DERIVING FROM THE TRANSMISSION LINE A SET OF DERIVED OPERATING DIRECT VOLTAGES EACH CORRESPONDING D TO A SEPARATE PHASE LINE CURRENT IN THE TRANSMISSION LINE, COMPARING MEANS COUPLED TO THE COMPENSATOR MEANS AND
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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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |