Reduced focal spot motion in a CT X-ray tube

Details Reduced focal spot motion in a CT X-ray tube Reduced focal spot motion in a CT X-ray tube

2005-07-08

2008-11-11

Glick, Edward J. (Department: 2882)

X-ray or gamma ray systems or devices

Source

Electron tube

C378S137000, C378S138000, C313S631000, C313S634000

Reexamination Certificate

active

07450690

ABSTRACT:
An x-ray tube assembly is provided comprising a tube casing assembly including a plurality of vertical mount posts. An insulator plate is mounted to the plurality of vertical mount posts such that the insulator plate can translate vertically on the posts. A cathode assembly is mounted to the insulator plate and generates both an eccentric moment and a vertical expansion in response to a cathode power load. A semi-compressible element is positioned between at least one of the vertical mount posts and the insulator plate. The semi-compressible element becomes incompressible at a cathode power threshold such that the vertical expansion is translated into a correction moment countering the eccentric moment.

REFERENCES:
patent: 2889482 (1959-06-01), Sokolov

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