US3144534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slow blowing fuse
Assignee: Littelfuse Inc
•
Filing: 1960-12-12
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Granted: 1964-08-11
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Expires: 1980-12-12
Abstract
No abstract record available.
Inventors
- 👤 Bertram W Baumbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:19
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/04; H01H85/05; H01H85/055; H01H85/0039; H01H85/0047; H01H85/0052
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A TIME LAG FUSE COMPRISING A TUBE OF INSULATING MATERIAL FORMING A FUSE HOUSING; A PAIR OF FUSE TERMINALS AT OPPOSITE ENDS OF SAID TUBE; AND A FUSE ASSEMBLY IN SAID TUBE INCLUDING A PAIR OF RESILIENTLY URGED APART CONDUCTIVE PARTS RESPECTIVELY CONNECTED TO SAID FUSE TERMINALS, A SOLDER JOINT HOLDING SAID CONDUCTIVE PARTS TOGETHER, ONE OF SAID CONDUCTIVE PARTS INCLUDIN G A HEAT RESERVOIR MEMBER SURROUNDED BY A HEATER COIL, THE OTHER CONDUCTIVE PART EXTENDING TO ONE OF SAID FUSE TERMINALS, A HIGH OVERLOAD FUSE FILAMENT CONNECTED BETWEEN SAID HEATER COIL AND THE OTHER FUSE TERMINAL, AND MEANS INDEPENDENT OF SAID FUSE FILAMENT FOR SUPPORTING SAID FUSE ASSEMBLY RIGIDLY WITHIN THE TUBE, SAID FUSE FILAMENT BEING RELIEVED OF STRAINS BY THE INDEPENDENT SUPPORT PROVIDED FOR THE FUSE ASSEMBLY.
Claim 2
Dependent Claim
129 words
A TIME LAG FUSE COMPRISING A TUBE OF INSULATING MATERIAL FORMING A FUSE HOUSING; A PAIR OF FUSE TERMINALS AT OPPOSITE ENDS OF SAID TUBE; AND A FUSE ASSEMBLY IN SAID TUBE INCLUDING A PAIR OF RESILIENTLY URGED APART CONDUCTIVE PARTS RESPECTIVELY CONNECTED TO SAID FUSE TERMINALS, A SOLDER JOINT HOLDING SAID CONDUCTIVE PARTS TOGETHER, ONE OF SAID CONDUCTIVE PARTS INCLUDIN G A HEAT RESERVOIR MEMBER SURROUNDED BY A HEATER COIL, THE OTHER CONDUCTIVE PART EXTENDING TO ONE OF SAID FUSE TERMINALS, A HIGH OVERLOAD FUSE FILAMENT CONNECTED BETWEEN SAID HEATER COIL AND THE OTHER FUSE TERMINAL, AND MEANS INDEPENDENT OF SAID FUSE FILAMENT FOR SUPPORTING SAID FUSE ASSEMBLY RIGIDLY WITHIN THE TUBE, SAID FUSE FILAMENT BEING RELIEVED OF STRAINS BY THE INDEPENDENT SUPPORT PROVIDED FOR THE FUSE ASSEMBLY.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |