US3113195A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuse structures for elevated circuit voltages
Assignee: Chase Shawmut Co
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Filing: 1962-02-05
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Granted: 1963-12-03
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Expires: 1982-02-05
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Kozacka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:04
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/04; H01H85/041; H01H85/042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
AN ELECTRIC FUSE COMPRISING: A TUBULAR CASING OF INSULATING MATERIAL; A PULVERULENT ARC-QUENCHING FILLER WITHIN SAID CASING; A PAIR OF TERMINAL ELEMENTS CLOSING THE ENDS OF SAID CASING; A RIBBON FUSE LINK OF A RELATIVELY HIGH FUSING POINT METAL ARRANGED INSIDE AND CASING AND DEFINING SERIALLY RELATED POINTS OF REDUCED CROSS-SECTION CONDUCTIVELY INTERCONNECTING SAID PAIR OF TERMINAL ELEMENTS; A PLURALITY OF INSULATING BARRIERS OF A MATERIAL EVOLVING GAS UNDER THE HEAT OF ELECTRIC ARCS SUPPORTED BY SAID LINK, EACH OF SAID PLURALITY OF INSULATING BARRIERS BEING FORMED BY A PAIR OF INSULATING PLATES SANDWICHING ALTERNATE POINTS OF REDUCED CROSS-SECTION OF SAID LINK AND EXPOSING POINTS OF REDUCED CROSS-SECTION OF SAID LINK SITUATED BETWEEN CONTIGUOUS INSULATING BARRIERS TO THE ACTION OF SAID ARC-QUENCHING FILLER, EACH OF SAID PLURALITY OF INSULATING BARRIERS BEING ARRANGED BETWEEN A PAIR OF POINTS OF REDUCED CROSS-SECTION OF SAID LINK EXPOSED TO THE ACTION OF SAID ARC-QUENCHING FILLER, AND EACH OF SAID PLURALITY OF INSULATING BARRIERS LIMITING THE BURN-BACK-PATHS IN OPPOSITE DIRECTIONS OF A PAIR OF SAID POINTS OF REDUCED CROSS-SECTION OF SAID LINK EXPOSED TO THE ACTION OF SAID ARC-QUENCHING FILLER.
Claim 2
Dependent Claim
185 words
AN ELECTRIC FUSE COMPRISING: A TUBULAR CASING OF INSULATING MATERIAL; A PULVERULENT ARC-QUENCHING FILLER WITHIN SAID CASING; A PAIR OF TERMINAL ELEMENTS CLOSING THE ENDS OF SAID CASING; A RIBBON FUSE LINK OF A RELATIVELY HIGH FUSING POINT METAL ARRANGED INSIDE AND CASING AND DEFINING SERIALLY RELATED POINTS OF REDUCED CROSS-SECTION CONDUCTIVELY INTERCONNECTING SAID PAIR OF TERMINAL ELEMENTS; A PLURALITY OF INSULATING BARRIERS OF A MATERIAL EVOLVING GAS UNDER THE HEAT OF ELECTRIC ARCS SUPPORTED BY SAID LINK, EACH OF SAID PLURALITY OF INSULATING BARRIERS BEING FORMED BY A PAIR OF INSULATING PLATES SANDWICHING ALTERNATE POINTS OF REDUCED CROSS-SECTION OF SAID LINK AND EXPOSING POINTS OF REDUCED CROSS-SECTION OF SAID LINK SITUATED BETWEEN CONTIGUOUS INSULATING BARRIERS TO THE ACTION OF SAID ARC-QUENCHING FILLER, EACH OF SAID PLURALITY OF INSULATING BARRIERS BEING ARRANGED BETWEEN A PAIR OF POINTS OF REDUCED CROSS-SECTION OF SAID LINK EXPOSED TO THE ACTION OF SAID ARC-QUENCHING FILLER, AND EACH OF SAID PLURALITY OF INSULATING BARRIERS LIMITING THE BURN-BACK-PATHS IN OPPOSITE DIRECTIONS OF A PAIR OF SAID POINTS OF REDUCED CROSS-SECTION OF SAID LINK EXPOSED TO THE ACTION OF SAID ARC-QUENCHING FILLER.
References Cited (Backward Citations)
US2837614A
Cited
US2858396A
Cited
US2876312A
Cited
US2892061A
Cited
US3020372A
Cited
US2964604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |