Patent US4791966A successfully refreshed from Google Patents.
US3243552A
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US
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Assignee: McGraw Edison Co
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Filing: 1964-09-08
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Granted: 1966-03-29
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Expires: 1984-09-08
Abstract
No abstract record available.
Inventors
- 👤 Harvey W Mikulecky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:43
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/04; H01H85/041; H01H85/042; H01H85/38
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
68 words
IN AN ELECTRIC CIRCUIT INTERRUPTER CAPABLE OF SUBSTANTIALLY LIMITING THE MAGNITUDE OF FAULT CURRENT FLOWING THERETHROUGH INCLUDING A FUSIBLE MAIN ELEMENT HAVING A BODY OF LOW MELTING TEMPERATURE ALLOY IN INTIMATE CONTACT THEREWITH, MEANS FOR CAUSING SAID MAIN ELEMENT TO BURN BACK IN A PLURALITY OF SERIALLY RELATED POINTS WHEN INTERRUPTING LOW MAGNITUDE FAULT CURRENT INCLUDING AN AUXILIARY FUSIBLE ELEMENT SPACED APART AT ITS ENDS BY AIR GAPS
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |