Patent US3179773A successfully refreshed from Google Patents.
US3179773A
Expired / Lapsed
US
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High speed current interrupting electric fuses
Assignee: Individual
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Filing: 1962-09-24
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Granted: 1965-04-20
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Expires: 1982-09-24
Abstract
No abstract record available.
Inventors
- 👤 Sr Kedric V Keeley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:39
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/04; H01H85/041; H01H85/044; H01H85/045; H01H85/0458
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
IN AN IMPROVED FUSIBLE LINK TYPE FUSE, THE IMPROVEMENT COMPRISING: A FUSIBLE CONDUCTOR HAVING AN EFFECTIVE AND SUBSTANTIALLY CONSTANT DIAMETER X ALONG ITS FULL LENGTH OF NOT MORE THAN 6 MILS AND OF A SUFFICIENT EFFECTIVE DIAMETER TO CARRY A NORMAL OPERATIVE CURRENT, WITH A PORTION OF SAID FUSIBLE CONDUCTOR OF LENGTH Y BEING SUSPENDED IN A GASEOUS ATMOSPHERIC COMPARTMENT OF SAID FUSE, AND AN ADJACENT PORTION OF SAID FUSIBLE CONDUCTOR OF LENGTH Z BEING ENCASED IN A NONFLUID ARC-RESISTANT INSULATING MATERIAL WITHIN SAID FUSE; THE LENGTH Y OF SAID FUSIBLE CONDUCTOR SUSPENDED IN SAID GASEOUS ATMOSPHERE BEING NOT LESS THAN TEN TIMES GREATER THAN THE EFFECTIVE DIAMETER X OF SAID FUSIBLE CONDUCTOR AND THE LENGTH Z OF SAID FUSIBLE CONDUCTOR ENCASED IN SAID ARC-RESISTANT MATERIAL BEING NOT LESS THAN TEN TIMES GREATER THAN THE EFFECTIVE DIAMETER X OF SAID FUSIBLE CONDUCTOR WITH THE TEXTURE OF THE ARC-RESISTANT INSULATING MATERIAL BEING FINER THAN THE EFFECTIVE DIAMETER OF THE FUSIBLE CONDUCTOR, SAID FUSIBLE CONDUCTOR BEING MADE OF MATERIAL WHEREIN THE VALUE OF THE FOLLOWING EXPRESSION IS LESS THAN 50,000:
Claim 2
Dependent Claim
178 words
IN AN IMPROVED FUSIBLE LINK TYPE FUSE, THE IMPROVEMENT COMPRISING: A FUSIBLE CONDUCTOR HAVING AN EFFECTIVE AND SUBSTANTIALLY CONSTANT DIAMETER X ALONG ITS FULL LENGTH OF NOT MORE THAN 6 MILS AND OF A SUFFICIENT EFFECTIVE DIAMETER TO CARRY A NORMAL OPERATIVE CURRENT, WITH A PORTION OF SAID FUSIBLE CONDUCTOR OF LENGTH Y BEING SUSPENDED IN A GASEOUS ATMOSPHERIC COMPARTMENT OF SAID FUSE, AND AN ADJACENT PORTION OF SAID FUSIBLE CONDUCTOR OF LENGTH Z BEING ENCASED IN A NONFLUID ARC-RESISTANT INSULATING MATERIAL WITHIN SAID FUSE; THE LENGTH Y OF SAID FUSIBLE CONDUCTOR SUSPENDED IN SAID GASEOUS ATMOSPHERE BEING NOT LESS THAN TEN TIMES GREATER THAN THE EFFECTIVE DIAMETER X OF SAID FUSIBLE CONDUCTOR AND THE LENGTH Z OF SAID FUSIBLE CONDUCTOR ENCASED IN SAID ARC-RESISTANT MATERIAL BEING NOT LESS THAN TEN TIMES GREATER THAN THE EFFECTIVE DIAMETER X OF SAID FUSIBLE CONDUCTOR WITH THE TEXTURE OF THE ARC-RESISTANT INSULATING MATERIAL BEING FINER THAN THE EFFECTIVE DIAMETER OF THE FUSIBLE CONDUCTOR, SAID FUSIBLE CONDUCTOR BEING MADE OF MATERIAL WHEREIN THE VALUE OF THE FOLLOWING EXPRESSION IS LESS THAN 50,000:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |