US4224656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fused electrolytic capacitor assembly
Assignee: Kemet Electronics Corp
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Filing: 1978-12-04
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Granted: 1980-09-23
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Expires: 1998-12-04
Abstract
Abstract Fusing assembly for electrolytic capacitors including a fuse element thermally isolated from the capacitor.
Inventors
- 👤 Henrique V. DeMatos
- 👤 John Piper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:10
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/0003
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
122 words
A fused capacitor assembly comprising a solid electrolytic capacitor body having two terminals, a fuse made of two exothermically alloyable metals in intimate contact with each other, a heat insulative body having a cavity therein substantially larger than said fuse for receiving said fuse, means for positioning said fuse in said cavity such that said fuse is thermally isolated from said heat insulative body and for providing a substantially airtight seal for said cavity, a first lead electrically connected from one said capacitor body terminal to said fuse, a second lead connected to said fuse such that said second lead, fuse and first lead are electrically in series with said capacitor body, a third lead connected to said other capacitor body terminal.
Claim 2
Dependent Claim
122 words
A fused capacitor assembly comprising a solid electrolytic capacitor body having two terminals, a fuse made of two exothermically alloyable metals in intimate contact with each other, a heat insulative body having a cavity therein substantially larger than said fuse for receiving said fuse, means for positioning said fuse in said cavity such that said fuse is thermally isolated from said heat insulative body and for providing a substantially airtight seal for said cavity, a first lead electrically connected from one said capacitor body terminal to said fuse, a second lead connected to said fuse such that said second lead, fuse and first lead are electrically in series with said capacitor body, a third lead connected to said other capacitor body terminal.
Claim 3
Dependent Claim
38 words
A fused capacitor assembly in accordance with claim 1 wherein said fuse comprises a segment of wire and the volume of said cavity is from about 4 to 50 times the volume of the wire in said cavity.
Claim 4
Dependent Claim
20 words
A fused capacitor assembly in accordance with claim 1 wherein said heat insulative body is spaced from said capacitor body.
Claim 5
Dependent Claim
26 words
A fused capacitor assembly in accordance with claim 1 wherein said capacitor body, and said heat insulative body are encapsulated in an electrically insulative epoxy material.
References Cited (Backward Citations)
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GB416018A
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US3553542A
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US3612957A
Cited
US4016464A
Cited
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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) | 1983-09-23 | 1984-03-24 | 1984-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-23 | 1988-03-24 | 1988-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-23 | 1992-03-24 | 1992-09-23 | $7700.00 | Window Closed / Lapsed |