Welding process for slotted tungsten rod
US4045645A · kind A · utility
0Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 5, 1976 |
| Grant date | Aug 30, 1977 |
| Priority date | — |
| Expiry date | Mar 5, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01K1/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In the process of inserting and fastening a thin molybdenum ribbon into the slot of a slotted tungsten rod, for use in the press seal of a high silica glass lamp envelope, a two step welding process is used. The first weld is made with the two welding electrodes at the internal end of the slot. The second weld is made with the electrodes closer to the end of the rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.