US3213323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breaker tripping signal circuit
Assignee: Westinghouse Electric Corp
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Filing: 1962-10-16
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Granted: 1965-10-19
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Expires: 1982-10-16
Abstract
No abstract record available.
Inventors
- 👤 Robert R Circle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:24
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/44; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/72; H03K17/73
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A CONTROL CIRCUIT FOR A CIRCUIT BREAKER HAVING A TRIPPING COIL COMPRISING, IN COMBINATION, SATURABLE CORE TRANSFORMER MEANS ADAPTED TO BE OPERATIVELY CONNECTED TO AN ALTERNATING CURRENT LINE TO BE PROTECTED, FULL WAVE RECTIFIER MEANS FOR OBTAINING A SIGNAL UNIFORM POLARITY WHICH VARIES IN AMPLITUDE IN ACCORDANCE WITH VARIATIONS IN THE RATE OF CHANGE OF CURRENT IAN THE LINE DURING AN ALTERNATION OF EITHER POLARITY OF THE CURRENT THEREIN, AND CIRCUIT MEANS INCLUDING ENERGIZING MEANS AND A CONTROLLED RECTIFIER GATED BYY THE SIGNAL CONNECTING THE TRIPPING COIL TO THE SIGNAL OBTAINING MEANS FOR ENERGIZING THE COIL WHEN THE SIGNAL ATTAINS AT LEASXT A PREDETERMINED AMPLITUDE.
Claim 2
Dependent Claim
105 words
A CONTROL CIRCUIT FOR A CIRCUIT BREAKER HAVING A TRIPPING COIL COMPRISING, IN COMBINATION, SATURABLE CORE TRANSFORMER MEANS ADAPTED TO BE OPERATIVELY CONNECTED TO AN ALTERNATING CURRENT LINE TO BE PROTECTED, FULL WAVE RECTIFIER MEANS FOR OBTAINING A SIGNAL UNIFORM POLARITY WHICH VARIES IN AMPLITUDE IN ACCORDANCE WITH VARIATIONS IN THE RATE OF CHANGE OF CURRENT IAN THE LINE DURING AN ALTERNATION OF EITHER POLARITY OF THE CURRENT THEREIN, AND CIRCUIT MEANS INCLUDING ENERGIZING MEANS AND A CONTROLLED RECTIFIER GATED BYY THE SIGNAL CONNECTING THE TRIPPING COIL TO THE SIGNAL OBTAINING MEANS FOR ENERGIZING THE COIL WHEN THE SIGNAL ATTAINS AT LEASXT A PREDETERMINED AMPLITUDE.
References Cited (Backward Citations)
US2509027A
Cited
US3110856A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |