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US3177403A
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Cross-field circuit breaker for direct current systems
Assignee: International Business Machines Corp
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Filing: 1961-06-16
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Granted: 1965-04-06
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Expires: 1981-06-16
Abstract
No abstract record available.
Inventors
- 👤 Orestes M Baycura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:20
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/44; H02H3/445
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
PROTECTIVE MEANS FOR A LOAD CIRCUIT COMPRISING, A CIRCUIT BREAKER FOR CONNECTING A LOAD CIRCUIT TO A SOURCE, TRIP MEANS FOR OPERATING SAID BREAKER TO DISCONNECT THE LOAD CIRCUIT FROM THE SOURCE, MAGNETIC MEANS HAVING A PLURALITY OF WINDINGS FOR PRODUCING A CROSS-FIELD CONTROL FLUX INCLUDING ONE WINDING CONNECTED TO BE RESPONSIVE TO AN INCREASE IN LOAD CURRENT FOR EFFECTING OPERATION OF SAID TRIP MEANS, AND MEANS INCLUDING AN ENERGY STORAGE DEVICE RESPONSIVE TO A PREVIOUS CONDITION OF THE LOAD
Claim 2
Dependent Claim
80 words
PROTECTIVE MEANS FOR A LOAD CIRCUIT COMPRISING, A CIRCUIT BREAKER FOR CONNECTING A LOAD CIRCUIT TO A SOURCE, TRIP MEANS FOR OPERATING SAID BREAKER TO DISCONNECT THE LOAD CIRCUIT FROM THE SOURCE, MAGNETIC MEANS HAVING A PLURALITY OF WINDINGS FOR PRODUCING A CROSS-FIELD CONTROL FLUX INCLUDING ONE WINDING CONNECTED TO BE RESPONSIVE TO AN INCREASE IN LOAD CURRENT FOR EFFECTING OPERATION OF SAID TRIP MEANS, AND MEANS INCLUDING AN ENERGY STORAGE DEVICE RESPONSIVE TO A PREVIOUS CONDITION OF THE LOAD
References Cited (Backward Citations)
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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 |