US4514723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for depicting inoperative electrical fuses
Assignee: Individual
•
Filing: 1983-04-14
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Granted: 1985-04-30
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Expires: 2003-04-14
Abstract
Abstract This is a method, and apparatus for practicing the method, by which electrical fuses or circuit breakers which have become inoperative by failure or overload can be instantly identified. The method and apparatus involves the use of light emitting diodes or the like connected in parallel with fuses in such a manner that when a fuse or circuit breaker fails in carrying an electrical load the flow of electrical current will be diverted to the light emitting device and cause it to visually signal the failure.
Inventors
- 👤 David T. Leal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:53
CPC Classifications
G; G08; G08B; G08B5/00; G08B5/22; G08B5/36; H; H01; H01H; H01H85/00; H01H85/02; H01H85/30; H01H85/32; H01H2085/0216
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
An automobile fuse bank holder comprising in combination a base in the form of a box open on its top side, said base containing a plurality of clip type fuse holders wherein each fuse holder comprises two end clips suitable to clip upon the ends of an elongated automotive type fuse; a cover means detachably mounted upon said base, wherein said cover means has a plurality of light emitting diode contact means so positioned therein that in pairs said light emitting diode contact means will contact, in cooperative pairs, the ends of fuses inserted within said pairs of clip means when the same are holding fuses; light emitting diode means inserted in electrical contact configuration between the pairs of light emitting diode contact means; and viewing means associated with each light emitting diode means in said cover means in such manner that each light emitting diode means is visible through said cover.
Claim 2
Dependent Claim
152 words
An automobile fuse bank holder comprising in combination a base in the form of a box open on its top side, said base containing a plurality of clip type fuse holders wherein each fuse holder comprises two end clips suitable to clip upon the ends of an elongated automotive type fuse; a cover means detachably mounted upon said base, wherein said cover means has a plurality of light emitting diode contact means so positioned therein that in pairs said light emitting diode contact means will contact, in cooperative pairs, the ends of fuses inserted within said pairs of clip means when the same are holding fuses; light emitting diode means inserted in electrical contact configuration between the pairs of light emitting diode contact means; and viewing means associated with each light emitting diode means in said cover means in such manner that each light emitting diode means is visible through said cover.
References Cited (Backward Citations)
US852539A
Cited
US1850813A
Cited
FR657621A
Cited
US2623099A
Cited
DE2060884A1
Cited
GB1549932A
Cited
US4056816A
Cited
US4157486A
Cited
JPS5498903A
Cited
DE2831139A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-29 | 1988-10-29 | 1989-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-29 | 1992-10-29 | 1993-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-29 | 1996-10-29 | 1997-04-30 | $7700.00 | Window Closed / Lapsed |