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Patent US3248609A successfully refreshed from Google Patents.
US3248609A
Expired / Lapsed
US
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Protective relaying devices
Assignee: Westinghouse Electric Corp
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Filing: 1962-12-27
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Granted: 1966-04-26
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Expires: 1982-12-27
Abstract
No abstract record available.
Inventors
- 👤 John C Gambale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:04
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/38; H02H3/387
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN A NETWORK PROTECTOR FOR CONTROLLING THE CONNECTION AND DISCONNECTION OF A POLYPHASE ALTERNATING CURRENT SUPPLY CIRCUIT AND A POLYPHASE ALTERNATING CURRENT LOAD CIRCUIT, A CIRCUIT BREAKER HAVING SUPPLY TERMINALS FOR CONNECTION TO THE SUPPLY CIRCUIT AND LOAD TERMINALS FOR CONNECTION TO THE LOAD CIRCUIT, CIRCUIT-BREAKER-CLOSING-CONTROL MEANS EFFECTIVE WHEN THE CIRCUIT BREAKER IS OPEN IN RESPONSE TO ELECTRICAL CONDITIONS AT SAID TERMINALS FOR CLOSING THE CIRCUIT BREAKER PROVIDED THAT THE ELECTRICAL CONDITIONS AT SAID TERMINALS ARE SUCH THAT THE SUPPLY TERMINALS CAN SUPPLY ELECTRIC ENERGY THROUGH THE CIRCUIT BREAKER TO THE LOAD TERMINALS, AND RESTRAINING MEANS RESPONSIVE TO THE PRESENCE OF A NEGATIVE SYMMETRICAL COMPONENT AT THE LOAD TERMINALS FOR RESTRAINING CLOSURE OF THE CIRCUIT BREAKER.
Claim 2
Dependent Claim
116 words
IN A NETWORK PROTECTOR FOR CONTROLLING THE CONNECTION AND DISCONNECTION OF A POLYPHASE ALTERNATING CURRENT SUPPLY CIRCUIT AND A POLYPHASE ALTERNATING CURRENT LOAD CIRCUIT, A CIRCUIT BREAKER HAVING SUPPLY TERMINALS FOR CONNECTION TO THE SUPPLY CIRCUIT AND LOAD TERMINALS FOR CONNECTION TO THE LOAD CIRCUIT, CIRCUIT-BREAKER-CLOSING-CONTROL MEANS EFFECTIVE WHEN THE CIRCUIT BREAKER IS OPEN IN RESPONSE TO ELECTRICAL CONDITIONS AT SAID TERMINALS FOR CLOSING THE CIRCUIT BREAKER PROVIDED THAT THE ELECTRICAL CONDITIONS AT SAID TERMINALS ARE SUCH THAT THE SUPPLY TERMINALS CAN SUPPLY ELECTRIC ENERGY THROUGH THE CIRCUIT BREAKER TO THE LOAD TERMINALS, AND RESTRAINING MEANS RESPONSIVE TO THE PRESENCE OF A NEGATIVE SYMMETRICAL COMPONENT AT THE LOAD TERMINALS FOR RESTRAINING CLOSURE OF THE CIRCUIT BREAKER.
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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |