Rotating anode x-ray tube

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

1988-06-23

1990-01-02

Fields, Carolyn E.

X-ray or gamma ray systems or devices

Source

Electron tube

378125, 378101, H01J 3510

Patent

active

048918326

ABSTRACT:
An x-ray tube has an evacuated housing with a cathode and a rotating anode therein, the rotating anode including a drive shaft normally supported during operation by a magnetic bearing arrangement, but having mechanical bearings attached to the housing by which the shaft is supported if the anode "drops" during operation. A disengageable contact is provided which, when closed, completes a circuit for supplying high voltage to the anode. A displaceable actuator extends into the evacuated housing for making and breaking the contact, the actuator being sealed air-tight within the housing by a spring bellows. The actuator has a guide element disposed outside of the evacuated housing, which permits the guide element to be lubricated as needed. A locking element is provided which is engageable with the guide element to hold the anode shaft, and thus the anode, in place against the mechanical bearings during transport of the x-ray tube.

REFERENCES:
patent: 4167671 (1979-09-01), Boden et al.
patent: 4468801 (1984-08-01), Sudo et al.
patent: 4583794 (1986-04-01), Takahara et al.
patent: 4628522 (1986-12-01), Ebersberger

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