US3341674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric quartz-sand-filled fuse adapted to interrupt effectively protracted small overload currents
Assignee: GOLUD INC A DE CORP
•
Filing: 1965-10-21
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Granted: 1967-09-12
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Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Philip C Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:22
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/04; H01H85/05; H01H85/055
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
AN ELECTRIC FUSE COMPRISING IN COMBINATION: (A) A TUBULAR CASING OF INSULATING MATERIAL; (B) A PAIR OF TERMINAL ELEMENTS CLOSING THE ENDS OF SAID CASING; (C) AN ARC-QUENCHING QUARTZ-SAND-FILLER INSIDE SAID CASING; (D) A FIRST FUSIBLE ELEMENT HAVING A RELATIVELY LARGE CURRENT-CARRYING CAPACITY INSIDE SAID CASING, CONDUCTIVELY INTERCONNECTING SAID PAIR OF TERMINAL ELEMENTS AND SUBMERSED IN SAID QUARTZ-SAND FILLER; (E) A SECOND FUSIBLE ELEMENT HAVING A RELATIVELY SMALL CURRENT-CARRYING CAPACITY SHUNTING SAID FIRST FUSIBLE ELEMENT; AND (F) A WOVEN SLEEVE OF GLASS FIBERS ENVELOPING SAID SECOND FUSIBLE ELEMENT AND SEPARATING SAID SECOND FUSIBLE ELEMENT FROM SAID QUARTZ-SAND-FILLER.
Claim 2
Dependent Claim
97 words
AN ELECTRIC FUSE COMPRISING IN COMBINATION: (A) A TUBULAR CASING OF INSULATING MATERIAL; (B) A PAIR OF TERMINAL ELEMENTS CLOSING THE ENDS OF SAID CASING; (C) AN ARC-QUENCHING QUARTZ-SAND-FILLER INSIDE SAID CASING; (D) A FIRST FUSIBLE ELEMENT HAVING A RELATIVELY LARGE CURRENT-CARRYING CAPACITY INSIDE SAID CASING, CONDUCTIVELY INTERCONNECTING SAID PAIR OF TERMINAL ELEMENTS AND SUBMERSED IN SAID QUARTZ-SAND FILLER; (E) A SECOND FUSIBLE ELEMENT HAVING A RELATIVELY SMALL CURRENT-CARRYING CAPACITY SHUNTING SAID FIRST FUSIBLE ELEMENT; AND (F) A WOVEN SLEEVE OF GLASS FIBERS ENVELOPING SAID SECOND FUSIBLE ELEMENT AND SEPARATING SAID SECOND FUSIBLE ELEMENT FROM SAID QUARTZ-SAND-FILLER.
References Cited (Backward Citations)
US661241A
Cited
US2326031A
Cited
US2808487A
Cited
US3007019A
Cited
US3143615A
Cited
US3189712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |