Grid of pyrolytic graphite for a high-power electron tube and a method for the assembly of said grid
US4229674A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 18, 1979 |
| Grant date | Oct 21, 1980 |
| Priority date | — |
| Expiry date | Jun 18, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J19/38
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thin-walled grid of pyrolytic graphite for a high-power electron tube such as a triode or tetrode has a lower end in the form of a bell-shaped sleeve provided with uniformly spaced longitudinal slots which stop short of the edge of the sleeve. The solid edge portion thus formed beneath each slot serves to fit the sleeve over a metal ring of the electron tube base. The grid sleeve is clamped against the metal ring by means of screws engaged in internally-threaded bores of the ring. The edge portions of the graphite sleeve are thus fractured so as to form longitudinal strips which compensate for differences in expansion between the graphite and the metal while ensuring good electrical contact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.