Rotating anode x-ray tube

Details Rotating anode x-ray tube Rotating anode x-ray tube

1980-02-25

1982-04-20

Demeo, Palmer C.

Electric lamp and discharge devices

Cyclotrons

H01J 3510

Patent

active

043261442

ABSTRACT:
In an exemplary embodiment, the shaft for the rotating anode is supported by ball bearings in a tubular support-mounting extending into the envelope of the tube. Particularly in the case of rotating anodes, which rotate very rapidly (e.g. 300 Hz), it is disadvantageous that rubbed-off residue falls out of the bearings, on the one hand, and that lubricant leaves the bearings, on the other hand. For the improvement of the operating properties and a permanent lubrication, and the improvement of the high voltage strength by avoidance of loose particles in the tube envelope, the disclosure provides an arrangement of covers on the bearings and possibly one or more radial barriers rotating with the shaft between the stationary covering parts. A rotating anode x-ray tube with a bearing protected in accordance with the disclosure is particularly suited for use in x-ray tubes with very rapidly rotating anode plates.

REFERENCES:
patent: 2280886 (1942-04-01), Brace
patent: 2335253 (1943-11-01), Atlee
patent: 2570770 (1951-10-01), Combee
patent: 2885583 (1959-05-01), Zunick et al.
patent: 3699373 (1972-10-01), Holland et al.
patent: 3710162 (1973-01-01), Bougle

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