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US4814946A
Expired / Lapsed
US
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Fuse assembly for solid electrolytic capacitor
Assignee: Kemet Electronics Corp
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Filing: 1988-05-23
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Granted: 1989-03-21
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Expires: 2008-05-23
Abstract
Abstract A solid electrolytic capacitor having an exothermic alloying fuse attached thereto, the fuse comprising a strip of metal, silicone surrounding the strip and an insulative material disposed on opposite sides of the silicone composition to form a sandwich.
Inventors
- 👤 Tsung-Yuan Su
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:03
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/04; H01H85/05; H01H85/055; H01H85/06; H01G; H01G9/00; H01G9/0003
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
142 words
A capacitor package for forming a fused solid electrolyte capacitor including a capacitor body having a positive and negative terminal, a lead for each terminal, a miniature fuse assembly electrically connected between one of said terminals and its corresponding lead and a molded resinous material surrounding said capacitor package with each lead frame extending therefrom, said miniature fuse assembly comprising; a strip of a composite of exothermically alloying metals of predetermined length and cross-section; a high temperature composition of silicone exhibiting an adhesive characteristic surrounding said alloying strip; a thin strip of electrically insulative material disposed on opposite sides and in contact with said silicone composition to form a sandwich; and means for electrically coupling said alloying strip at one end thereof to one of said terminals with said corresponding lead frame electrically coupled to said alloying strip at its opposite end.
Claim 2
Dependent Claim
142 words
A capacitor package for forming a fused solid electrolyte capacitor including a capacitor body having a positive and negative terminal, a lead for each terminal, a miniature fuse assembly electrically connected between one of said terminals and its corresponding lead and a molded resinous material surrounding said capacitor package with each lead frame extending therefrom, said miniature fuse assembly comprising; a strip of a composite of exothermically alloying metals of predetermined length and cross-section; a high temperature composition of silicone exhibiting an adhesive characteristic surrounding said alloying strip; a thin strip of electrically insulative material disposed on opposite sides and in contact with said silicone composition to form a sandwich; and means for electrically coupling said alloying strip at one end thereof to one of said terminals with said corresponding lead frame electrically coupled to said alloying strip at its opposite end.
Claim 3
Dependent Claim
40 words
A capacitor package as defined in claim 1 wherein said thin strip of insulative material and said high temperature silicone constitute a preformed composite tape with said insulative material on one side thereof and said silicone on the other side.
Claim 4
Dependent Claim
28 words
A capacitor package as defined in claim 2 wherein said thin strip of insulative material is composed of a material selected from the class consisting of woven fiberglass.
Claim 5
Dependent Claim
27 words
A capacitor package as defined in claim 3 wherein said means for electrically coupling said alloying strip to said capacitor terminal is a high temperature conductive epoxy.
Claim 6
Dependent Claim
60 words
A capacitor package as defined in claim 4 wherein said lead is bifurcated at the point of attachment with the fuse assembly to form an open area with arms extending on opposite sides of the open area and with said alloying strip extending between said arms and across said open area parallel to the longitudinal axis of the capacitor anode.
Claim 7
Dependent Claim
63 words
A capacitor package as defined in claim 4 wherein said lead is bifurcated at the point of attachment with the fuse assembly to form an open area with arms extending on opposite sides of the open area and with said alloying strip extending between said arms and across said open area in a direction transverse to the longitudinal axis of the capacitor anode.
Claim 8
Dependent Claim
81 words
A miniature fuse assembly for an electrical device comprising: a composite of exothermically alloying metals in the form of a strip having a predetermined length and cross-section; a high temperature composition of silicone surrounding said strip; a thin strip of an electrically insulating material disposed on opposed sides of said silicone composition to form a sandwich; and conductive means in contact with said strip and extending from opposite ends of said sandwich for interconnecting said fuse assembly within an electric circuit.
Claim 9
Dependent Claim
81 words
A miniature fuse assembly for an electrical device comprising: a composite of exothermically alloying metals in the form of a strip having a predetermined length and cross-section; a high temperature composition of silicone surrounding said strip; a thin strip of an electrically insulating material disposed on opposed sides of said silicone composition to form a sandwich; and conductive means in contact with said strip and extending from opposite ends of said sandwich for interconnecting said fuse assembly within an electric circuit.
Claim 10
Dependent Claim
30 words
A miniature fuse assembly as defined in claim 7 wherein said thin strip of electrically insulating material is composed of a material selected from the class consisting of woven fiberglass.
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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) | 1992-03-20 | 1992-09-19 | 1993-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-20 | 1996-09-19 | 1997-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-20 | 2000-09-19 | 2001-03-21 | $7700.00 | Window Closed / Lapsed |