GB198345A - Improvements in sparking plugs - Google Patents
Improvements in sparking plugsInfo
- Publication number
- GB198345A GB198345A GB9618/23A GB961823A GB198345A GB 198345 A GB198345 A GB 198345A GB 9618/23 A GB9618/23 A GB 9618/23A GB 961823 A GB961823 A GB 961823A GB 198345 A GB198345 A GB 198345A
- Authority
- GB
- United Kingdom
- Prior art keywords
- insulator
- electrode
- sparking
- ceramic material
- metallic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T21/00—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs
- H01T21/02—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs of sparking plugs
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Spark Plugs (AREA)
Abstract
198,345. Bosch Akt.-Ges., R. May 23, 1922, [Convention date]. Sparking - plugs. - In a sparking plug having an insulator b of ceramic material, the central electrode c is formed throughsulator b of ceramic substance, for instance " silit," which consists of carbon, silicon, and nitrogen. The conductivity may be improved by adding powdered carbon, graphite, metallic componnds, or other conducting substances. The electrode preferably has the same co-efficient of expansion as the insulator, in order to prevent leakages. In one form, the electrode and the insulator are both fixed before being assembled. In modifications one or both are unfired or only lightly fired before assembling, and both are then fired together; an intermediate adhesive layer of fireproof material may be employed. In a further form, a short central electrode of vitreous or ceramic material, in the lower end of the insulator, is connected to a metallic terminal post.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE198345X | 1922-05-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB198345A true GB198345A (en) | 1924-03-20 |
Family
ID=5756933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9618/23A Expired GB198345A (en) | 1922-05-23 | 1923-04-09 | Improvements in sparking plugs |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB198345A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58186137A (en) * | 1982-04-06 | 1983-10-31 | ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Method of mounting central electrode in insulator of ignition plug without gap for internal combustion engine |
| US4539503A (en) * | 1981-11-07 | 1985-09-03 | Robert Bosch Gmbh | Rapid-heating, high-temperature-stable spark plug for internal combustion engines |
| GB2291124A (en) * | 1994-06-30 | 1996-01-17 | Bosch Gmbh Robert | I.c.engine spark plug |
| US5821676A (en) * | 1994-09-12 | 1998-10-13 | General Motors Corporation | Spark plug with grooved, tapered center electrode |
-
1923
- 1923-04-09 GB GB9618/23A patent/GB198345A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4539503A (en) * | 1981-11-07 | 1985-09-03 | Robert Bosch Gmbh | Rapid-heating, high-temperature-stable spark plug for internal combustion engines |
| JPS58186137A (en) * | 1982-04-06 | 1983-10-31 | ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Method of mounting central electrode in insulator of ignition plug without gap for internal combustion engine |
| GB2291124A (en) * | 1994-06-30 | 1996-01-17 | Bosch Gmbh Robert | I.c.engine spark plug |
| GB2291124B (en) * | 1994-06-30 | 1998-02-18 | Bosch Gmbh Robert | Spark plug for internal combustion engines |
| US5821676A (en) * | 1994-09-12 | 1998-10-13 | General Motors Corporation | Spark plug with grooved, tapered center electrode |
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