Claims
- 1. A process for assembling a cathode for electron gun comprising a body of emissive material, a cup into which the body of emissive material is inserted, a substantially cylindrical metal skirt, the said process comprising the steps of:insertion of the cup into one of the open ends of the metal skirt; and crimping of the body/cup/skirt assembly by lateral squeezing in such a way as to cause an indent-like deformation of the lateral face of the body.
- 2. A process for assembling a cathode for electron gun according to claim 1, further comprising a phase of welding the cup to the skirt, and the lateral squeezing occurring at the level of the cup to skirt weld zone.
- 3. A process for assembling a cathode for electron gun according to claim 2, wherein the indent-like deformation is carried out by squashing the weld points against the lateral face of the body.
- 4. An assembling process according to claim 2, wherein the welding of the cup to the skirt is carried out at at least three points.
- 5. A process for assembling a cathode for electron gun according to claim 1, wherein the indent-like deformation is carried out by a suitable profile of the presser elements effecting the crimping.
Priority Claims (1)
Number |
Date |
Country |
Kind |
99 16199 |
Dec 1999 |
FR |
|
Parent Case Info
This application claims the benefit under 35 U.S.C. §365 of International Application PCT/EP00/12830, filed Dec. 15, 2000, which was published in accordance with PCT Article 21(2) on Jun. 28, 2001 in English; and which claims benefit of French Patent Application Serial No. 9916199 filed Dec. 22, 1999.
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
PCT/EP00/12830 |
|
WO |
00 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO01/46978 |
6/28/2001 |
WO |
A |
US Referenced Citations (5)
Foreign Referenced Citations (4)
Number |
Date |
Country |
4140943 |
Sep 1991 |
DE |
2262650 |
Jun 1993 |
GB |
62-217527 |
Sep 1987 |
JP |
2-244533 |
Sep 1990 |
JP |
Non-Patent Literature Citations (2)
Entry |
Patent Abstracts of Japan, vol. 012, No. 077, Mar. 10, 1988 and JP 62-217527. |
Patent Abstracts of Japan, vol. 014, No. 560, Dec. 13, 1990 And JP 02-244533. |