Method of capacitive discharge welding firing tip to spark plug electrode
US9130357B2 · kind B2 · utility
0Cited by
14References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 14, 2014 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Feb 17, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T13/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A capacitive discharge welding method is used to join firing tips, such as those made from various precious metals, to spark plug electrodes. In one embodiment, charged capacitors or other energy storage devices coupled to welding electrodes quickly release stored energy so that a peak weld power and maximum interface temperature is quickly established, followed by a rapid decline in weld power and interface temperature. The resulting capacitive discharge weld joint may include solidified molten material from both the firing tip and the electrode and possess a number of other desirable qualities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.