Title:
METHOD FOR MAKING ELECTRODES AND VACUUM TUBE USING SAME
Document Type and Number:
WIPO Patent Application WO2003054900
Kind Code:
A3
Abstract:
The invention concerns vacuum tubes, and in particular electronic tubes. The invention concerns a method for making a tube, in particular an electron collector with several electrodes (30, 40, 50, 60), which consists in producing electrodes in the form of ceramic blocks with high thermal conductivity. The blocks have (at least) electrically conductive surfaces. They are preferably made of insulating ceramic such as aluminium nitride, and are made conductive over part of their surface. The conductive surface portion preferably consists of a conductive ceramic, preferably based on titanium nitride, or similar conductive ceramic materials. Thus robustness, heat discharge capacity and weight are improved.
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Inventors:
PONARD PASCAL (FR)
FERRATO MARC (FR)
FERRATO MARC (FR)
Application Number:
PCT/FR2002/004272
Publication Date:
April 29, 2004
Filing Date:
December 10, 2002
Export Citation:
Assignee:
THALES SA (FR)
PONARD PASCAL (FR)
FERRATO MARC (FR)
PONARD PASCAL (FR)
FERRATO MARC (FR)
International Classes:
H01J9/14; H01J9/02; H01J23/02; H01J23/027; H01J; (IPC1-7): H01J23/02; H01J9/02
Foreign References:
| US4277721A | 1981-07-07 |
Other References:
See also references of EP 1459347A2
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