US3116440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker control employing saturable reactors
Assignee: Allis Chalmers Corp
•
Filing: 1957-06-17
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Granted: 1963-12-31
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Expires: 1977-06-17
Abstract
No abstract record available.
Inventors
- 👤 Baude John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:02
CPC Classifications
H; H01; H01H; H01H47/00; H01H47/22; H01H47/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
IN COMBINATION A CIRCUIT BREAKER, A CLOSING COIL FOR ACTUATING SAID BREAKER, A CORE STRUCTURE OF MAGNETIC MATERIAL, A PAIR OF REACTANCE WINDINGS MOUNTED ON SAID CORE STRUCTURE AND CONNECTED IN SERIES WITH SAID COIL, MEANS FOR ENERGIZING SAID PAIR OF WINDINGS, SAID REACTANCE WINDINGS DURING UNSATURATED CONDITION OF SAID CORE STRUCTURE LIMITING CURRENT FLOW THROUGH SAID COIL TO RETAIN SAID COIL IN THE DE-ENERGIZED CONDITION, A CONTROL WINDING MOUNTED ON A PART OF SAID CORD STRUCTURE, A SOURCE OF UNIDIRECTIONAL CURRENT, AND CAPACITANCE MEANS CONNECTING SAID SOURCE TO SAID CONTROL WINDING FOR SUPPLYING SAID CONTROL WINDING WITH A SINGLE PULSE OF UNIDIRECTIONAL CURRENT CAUSING SAID CORE STRUCTURE TO REACH SATURATION AND CURRENT TO FLOW THROUGH SAID COIL OF SUFFICIENT VALUE TO CLOSE SAID BREAKER.
Claim 2
Dependent Claim
125 words
IN COMBINATION A CIRCUIT BREAKER, A CLOSING COIL FOR ACTUATING SAID BREAKER, A CORE STRUCTURE OF MAGNETIC MATERIAL, A PAIR OF REACTANCE WINDINGS MOUNTED ON SAID CORE STRUCTURE AND CONNECTED IN SERIES WITH SAID COIL, MEANS FOR ENERGIZING SAID PAIR OF WINDINGS, SAID REACTANCE WINDINGS DURING UNSATURATED CONDITION OF SAID CORE STRUCTURE LIMITING CURRENT FLOW THROUGH SAID COIL TO RETAIN SAID COIL IN THE DE-ENERGIZED CONDITION, A CONTROL WINDING MOUNTED ON A PART OF SAID CORD STRUCTURE, A SOURCE OF UNIDIRECTIONAL CURRENT, AND CAPACITANCE MEANS CONNECTING SAID SOURCE TO SAID CONTROL WINDING FOR SUPPLYING SAID CONTROL WINDING WITH A SINGLE PULSE OF UNIDIRECTIONAL CURRENT CAUSING SAID CORE STRUCTURE TO REACH SATURATION AND CURRENT TO FLOW THROUGH SAID COIL OF SUFFICIENT VALUE TO CLOSE SAID BREAKER.
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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) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |