Method for the manufacture of vacuum tube bases and device for the application of this method
US4801320A · kind A · utility
1Cited by
6References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 22, 1987 |
| Grant date | Jan 31, 1989 |
| Priority date | — |
| Expiry date | Apr 22, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for the manufacture of vacuum tube bases wherein to mould bases of electronic tubes shaving conductors of different lengths, a widened opening is made in the upper mould and a distance sleeve with a dead hole is placed in it. This distance sleeve compensates for the difference in length with respect to the longest conductors. Also set forth is a device for application of this method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.