Spark plug
US-2024275138-A1 · Aug 15, 2024 · US
Manufacturing method of spark plug
US9190814B1 · US · B1
| Field | Value |
|---|---|
| Publication number | US-9190814-B1 |
| Application number | US-201514718424-A |
| Country | US |
| Kind code | B1 |
| Filing date | May 21, 2015 |
| Priority date | May 21, 2014 |
| Publication date | Nov 17, 2015 |
| Grant date | Nov 17, 2015 |
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Abstract
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A manufacturing method for manufacturing a spark plug including a rod-shaped center electrode extending in an axial direction, an insulator having a tubular shape having an axial hole and holding the center electrode in the axial hole, a metal shell having a tubular shape having an end surface and an inner peripheral surface, a gap being formed between a leading end side of the insulator and the inner peripheral surface, and a ground electrode welded to the end surface, the manufacturing method including welding the ground electrode to the end surface, and removing welding sag, which is formed inside the metal shell by the welding, by causing a tip end portion of a linear member to come into contact with the welding sag while rotating a tool in which a base end portion of the linear member is fixed.
First claim
Opening claim text (preview).
Having described the invention, the following is claimed: 1. A manufacturing method of a spark plug for manufacturing the spark plug including a rod-shaped center electrode extending in an axial direction, an insulator having a tubular shape having an axial hole and holding the center electrode in the axial hole, a metal shell having a tubular shape having an end surface and an inner peripheral surface, a gap being formed between a leading end side of the insulator and the inner pe…
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- H01T21/02Primary
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9190814B1 cover?
- A manufacturing method for manufacturing a spark plug including a rod-shaped center electrode extending in an axial direction, an insulator having a tubular shape having an axial hole and holding the center electrode in the axial hole, a metal shell having a tubular shape having an end surface and an inner peripheral surface, a gap being formed between a leading end side of the insulator and th…
- Who is the assignee on this patent?
- Ngk Spark Plug Co
- What technology area does this patent fall under?
- Primary CPC classification H01T21/02. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 17 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B1). 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).