Chip resistor and method for manufacturing same
US-2020066429-A1 · Feb 27, 2020 · US
Sulfurization detection resistor
US11506594B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11506594-B2 |
| Application number | US-202017112493-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 4, 2020 |
| Priority date | Dec 25, 2019 |
| Publication date | Nov 22, 2022 |
| Grant date | Nov 22, 2022 |
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- Title
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Abstract
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A sulfurization detection resistor includes: a rectangle-shaped insulating substrate; pair of front electrodes formed at both ends facing each other on a surface of the insulating substrate; plurality of sulfurization detection conductors arranged in parallel between the paired front electrodes; plurality of resistors connected between the ends of each of the sulfurization detection conductors and the paired front electrodes; and sulfide gas impermeable protective film that covers all of the resistors and some of the sulfurization detection conductors, wherein each of the sulfurization detection conductors has a sulfurization detection unit exposed from a window hole in the protective film; and by covering the sulfurization detection units with different types of sulfurization rate adjustment layers formed of an acrylic resin, a silicon resin, and the like, timing of disconnection is set so as to vary in response to a cumulative amount of sulfurization in each of the sulfurization detection units.
First claim
Opening claim text (preview).
What is claimed is: 1. A sulfurization detection resistor comprising: a rectangle-shaped insulating substrate; a pair of front electrodes formed at both ends facing each other on a main surface of the insulating substrate; a plurality of sulfurization detection conductors arranged in parallel between the paired front electrodes; a plurality of resistors connected between at least one of the paired front electrodes and the sulfurization detection conductors; and a sulfide gas impermeable protective film that covers all of the resistors and some of the sulfurization detection conductors, wherein the sulfurization detection conductors have sulfurization detection units exposed from the protective film; and by selectively covering each of the sulfurization detection units with a sulfurization rate adjustment layer, timing of disconnection is set so as to vary in response to a cumulative amount of sulfurization in each of the sulfurization detection units. 2. The sulfurization detection resistor according to claim 1 , wherein the sulfurization rate adjustment layer is formed of a silicon resin that increases a sulfurization rate of the sulfurization detection unit. 3. The sulfurization detection resistor according to claim 1 , wherein the sulfurization rate adjustment layer is formed of a sulfide gas permeable resin that decreases a sulfurization rate of the sulfurization detection unit. 4. The sulfurization detection resistor according to claim 1 , wherein the protective film has isolation sections interposed between the sulfurization detection units arranged in parallel. 5. The sulfurization detection resistor according to claim 1 , wherein precoat layers formed of a glass material are interposed between the resistors and the protective film; and ends of the precoat layers protrude from the protective film and define the sulfurization detection units. 6. The sulfurization detection resistor according to claim 1 , wherein at least the material compositions or film thicknesses of the sulfurization detection conductors are different from each other.
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the terminals or tapping points being coated on the resistive element · CPC title
comprising a plurality of layers stacked between terminals · CPC title
- G01N17/04Primary
Corrosion probes · CPC title
of metals · CPC title
the housing or enclosure being formed as coating or mould without outer sheath (H01C1/032 takes precedence) · CPC title
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- What does patent US11506594B2 cover?
- A sulfurization detection resistor includes: a rectangle-shaped insulating substrate; pair of front electrodes formed at both ends facing each other on a surface of the insulating substrate; plurality of sulfurization detection conductors arranged in parallel between the paired front electrodes; plurality of resistors connected between the ends of each of the sulfurization detection conductors …
- Who is the assignee on this patent?
- Koa Corp
- What technology area does this patent fall under?
- Primary CPC classification G01N17/04. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Nov 22 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).