Spark plug
US-2024275138-A1 · Aug 15, 2024 · US
Electrode-attached insulator and spark plug
US8933618B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8933618-B2 |
| Application number | US-201313855014-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 2, 2013 |
| Priority date | Apr 10, 2012 |
| Publication date | Jan 13, 2015 |
| Grant date | Jan 13, 2015 |
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Abstract
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An electrode-attached insulator having an insulator provided with an axial hole extending in the direction of an axis and a center electrode which is disposed on a distal-end side of the axial hole and has a front end portion that is exposed from a front end of the insulator. The electrode-attached insulator includes a locking member having a collar portion which is locked on a step portion. The center electrode and the locking member are joined together in the axial hole.
First claim
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What is claimed is: 1. An electrode-attached insulator comprising: an insulator provided with an axial hole which extends in the direction of an axis, the insulator having a diametrically expanded portion where the axial hole is diametrically expanded towards the front-end side in the direction of the axis at the front end thereof; and a center electrode is disposed in the axial hole on a front-end side of the axial hole wherein a front end portion is exposed from a front end of…
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Frequently asked questions
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- What does patent US8933618B2 cover?
- An electrode-attached insulator having an insulator provided with an axial hole extending in the direction of an axis and a center electrode which is disposed on a distal-end side of the axial hole and has a front end portion that is exposed from a front end of the insulator. The electrode-attached insulator includes a locking member having a collar portion which is locked on a step portion. Th…
- Who is the assignee on this patent?
- Ngk Spark Plug Co
- What technology area does this patent fall under?
- Primary CPC classification H01T13/20. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 13 2015 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).