Patent US5115220A successfully refreshed from Google Patents.
US5115220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuse with thin film fusible element supported on a substrate
Assignee: Ferraz Shawmut SAS
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Filing: 1991-01-03
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Granted: 1992-05-19
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Expires: 2011-01-03
Abstract
Abstract A fuse including a fuse casing, an end cap terminal at an end of the casing, a substrate supporting a thin film fusible element thereon, and a springy metal connecting strip made of sheet metal and providing electrical connection between the element and the terminal and mechanical support for the substrate.
Inventors
- 👤 David E. Suuronen
- 👤 Jean C. Terry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:49
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/04; H01H85/041; H01H85/046; H01H85/05; H01H85/143; H01H85/157; H01H85/044; H01H85/045; H01H85/0458
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
79 words
A fuse comprising a fuse casing, an end cap terminal at an end of said casing, a substrate supporting a thin film fusible element thereon and located within said casing, and a springy metal connecting strip made of sheet metal and providing electrical connection between said element and said terminal and mechanical support for said substrate, said substrate having an end spaced from said end cap terminal, said connecting strip biasing said substrate away from said end cap terminal.
Claim 2
Dependent Claim
79 words
A fuse comprising a fuse casing, an end cap terminal at an end of said casing, a substrate supporting a thin film fusible element thereon and located within said casing, and a springy metal connecting strip made of sheet metal and providing electrical connection between said element and said terminal and mechanical support for said substrate, said substrate having an end spaced from said end cap terminal, said connecting strip biasing said substrate away from said end cap terminal.
Claim 3
Dependent Claim
64 words
The fuse of claim 1 further comprising another end cap terminal at another end of said casing and a second springy metal connecting strip made of sheet metal and providing electrical connection between said element and said another end cap terminal and additional mechanical support for said substrate, said substrate having a length that is less than the distance between said end cap terminals.
Claim 4
Dependent Claim
80 words
A fuse comprising a fuse casing, an end cap terminal at an end of said casing, a substrate supporting a thin film fusible element thereon and located within said casing, and a springy metal connecting strip made of sheet metal and providing electrical connection between said element and said terminal and mechanical support for said substrate, wherein said connecting strip engages said substrate on two surfaces thereof and has two end portions that engage opposite sides of said fuse casing.
Claim 5
Dependent Claim
80 words
A fuse comprising a fuse casing, an end cap terminal at an end of said casing, a substrate supporting a thin film fusible element thereon and located within said casing, and a springy metal connecting strip made of sheet metal and providing electrical connection between said element and said terminal and mechanical support for said substrate, wherein said connecting strip engages said substrate on two surfaces thereof and has two end portions that engage opposite sides of said fuse casing.
Claim 6
Dependent Claim
14 words
The fuse of claim 1 wherein said substrate is made of a rigid material.
Claim 7
Dependent Claim
13 words
The fuse of claim 4 wherein said substrate is made of ceramic material.
Claim 8
Dependent Claim
17 words
The fuse of claim 3 further comprising solder used to connect said connecting strip to said substrate.
Claim 9
Dependent Claim
127 words
A fuse comprising a fuse casing, an end cap terminal at an end of said casing, a substrate supporting a thin film fusible element thereon and located within said casing, and a springy metal connecting strip made of sheet metal and providing electrical connection between said element and said terminal and mechanical support for said substrate, wherein the said connecting strip includes a first portion that extends from an end of said fuse casing toward the other end a first distance and a second portion that is connected to the first and extends in the reverse direction to the end of the substrate a second distance which is shorter than the first distance so as to tend to position said substrate away from said end cap terminal.
Claim 10
Dependent Claim
127 words
A fuse comprising a fuse casing, an end cap terminal at an end of said casing, a substrate supporting a thin film fusible element thereon and located within said casing, and a springy metal connecting strip made of sheet metal and providing electrical connection between said element and said terminal and mechanical support for said substrate, wherein the said connecting strip includes a first portion that extends from an end of said fuse casing toward the other end a first distance and a second portion that is connected to the first and extends in the reverse direction to the end of the substrate a second distance which is shorter than the first distance so as to tend to position said substrate away from said end cap terminal.
Claim 11
Dependent Claim
42 words
The fuse of claim 7 wherein said first portion makes an acute angle with a surface of the substrate, and said strip has a third portion that connects said first portion to said second portion and is substantially perpendicular to the substrate.
Claim 12
Dependent Claim
23 words
The fuse of claim 2 further comprising a fiber washer between said connecting strip and an inner surface of said end cap terminal.
Claim 13
Dependent Claim
14 words
The fuse of claim 1 further comprising arcquenching material substantially filling said fuse casing.
Claim 14
Dependent Claim
12 words
The fuse of claim 1 wherein said fusible element has been deposited.
Claim 15
Dependent Claim
16 words
The fuse of claim 2 wherein said fuse casing is cylindrical, and said substrate is rectangular.
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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) | 1995-05-19 | 1995-11-18 | 1996-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-19 | 1999-11-18 | 2000-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-19 | 2003-11-18 | 2004-05-19 | $7700.00 | Window Closed / Lapsed |