Patent US3566327A successfully refreshed from Google Patents.
US3566327A
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US
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Combined direct and indirect thermally calibrated bimetal
Assignee: ITE Circuit Breaker Co
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Filing: 1970-05-04
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Granted: 1971-02-23
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Expires: 1990-05-04
Abstract
Abstract AN AUTOMATIC CIRCUIT BREAKER IN WHICH THE BIMETAL ELEMENT OF THE THERMALLY RESPONSIVE TRIPPING ASSEMBLY IS PROVIDED WITH BOTH INDIRECT AND DIRECT HEATING, RESPONSIVE TO THE FLOW OF CURRENT THROUGH THE BREAKER. THE BIMETAL IS POSITIONED ADJACENT A RESTRICTED CROSS-SECTIONAL AREA OF A CONDUCTIVE MEMBER FORMING PART OF THE CIRCUIT BEING PROTECTED SO AS TO BE INDIRECTLY HEATED BY THE FLOW OF CUR- RENT THROUGH SUCH CONDUCTIVE MEMBER, WHILE AT THE SAME TIME A PARALLEL ELECTRICAL PATH IS ESTABLISHED ACROSS THE CONDUCTIVE MEMBER WHICH INCLUDES THE BIMETAL ITSELF IN SERIES. IN THIS MANNER THE BIMETAL IS ALSO HEATED DIRECTLY BY THE FLOW OF CURRENT THROUGH THE PARALLEL PATH.
Inventors
- 👤 Carl E Gryctko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:15
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/14; H01H71/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |