Spark plug
US-2024275138-A1 · Aug 15, 2024 · US
Spark plug
US9871352B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9871352-B2 |
| Application number | US-201715415173-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 25, 2017 |
| Priority date | Jan 28, 2016 |
| Publication date | Jan 16, 2018 |
| Grant date | Jan 16, 2018 |
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- Title
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- Abstract
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- Assignees and inventors
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- Key dates
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- First independent claim
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- CPC / IPC classifications
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- Citations and related patents
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Abstract
Official abstract text for this publication.
The spark plug includes: an insulator having a through hole that penetrates therethrough along an axial direction; a center electrode disposed on one end side of the through hole; a metal terminal disposed on the other end side of the through hole; and a conductive seal layer connected to at least one of the center electrode and the metal terminal. The conductive seal layer contains glass and a Cu—Zn alloy. A volumetric percentage of the Cu—Zn alloy in the conductive seal layer is greater than or equal to 44% and not greater than 55%.
First claim
Opening claim text (preview).
The invention claimed is: 1. A spark plug comprising: an insulator having a through hole that penetrates therethrough along an axial direction; a center electrode disposed on one end side of the through hole; a metal terminal disposed on the other end side of the through hole; and a conductive seal layer connected to at least one of the center electrode and the metal terminal, wherein the conductive seal layer contains glass and a Cu—Zn alloy, and a volumetric percentage of the Cu—Zn alloy in the conductive seal layer is greater than or equal to 44% and not greater than 55%. 2. The spark plug according to claim 1 , wherein the conductive seal layer is formed from raw material powders containing glass powder and Cu—Zn alloy powder. 3. The spark plug according to claim 2 , wherein a particle size of the glass powder is 25 μm to 75 μm. 4. The spark plug according to claim 1 , wherein the conductive seal layer contains Zn in an amount of 11%-40% by mass.
Assignees
Inventors
Classifications
of sparking plugs · CPC title
- H01T13/34Primary
characterised by the mounting of electrodes in insulation, e.g. by embedding · CPC title
Mounting, fixing or sealing of sparking plugs, e.g. in combustion chamber · CPC title
- H01T13/02Primary
Details · CPC title
with interference suppressing or shielding means · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9871352B2 cover?
- The spark plug includes: an insulator having a through hole that penetrates therethrough along an axial direction; a center electrode disposed on one end side of the through hole; a metal terminal disposed on the other end side of the through hole; and a conductive seal layer connected to at least one of the center electrode and the metal terminal. The conductive seal layer contains glass and a…
- Who is the assignee on this patent?
- Ngk Spark Plug Co
- What technology area does this patent fall under?
- Primary CPC classification H01T13/34. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 16 2018 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).