X-ray or gamma ray systems or devices – Source – Electron tube
Patent
1992-11-27
1994-04-12
Church, Craig E.
X-ray or gamma ray systems or devices
Source
Electron tube
378125, H01J 3510
Patent
active
053032802
ABSTRACT:
An anode assembly (14) is mounted by a bearing assembly (20-28) in a bearing housing (30). The bearing housing is constructed of substantially pure copper or other high thermal conductivity metal. The bearing housing defines a shoulder portion (36) between a side wall (34) and a mounting shank (38). The mounting shank is threaded (66) to be clamped into a mounting assembly (60) which provides substantially the sole support for the bearing and anode assembly. A steel reinforcing collar (52) with an integral seat portion (54) supports the shank and shoulder portions of the bearing housing. A vacuum envelope (40) of the x-ray tube includes a metal cap portion (44) which is sealed between the seat and shoulder portions in a vacuum tight relationship. In this manner, relatively soft substantially pure copper is used in the bearing housing to conduct thermal energy from the anode while the reinforcing collar provides sufficient structural strength that the weight of the cantilever mounted anode and bearing assembly to resist deformation of the copper shank and shoulder portion.
REFERENCES:
patent: 2230858 (1941-02-01), Atlee
patent: 2274865 (1942-03-01), Machlett
Crawford Robert C.
Maska Mark S.
Church Craig E.
Picker International Inc.
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