Apparatus for rotatably supporting an X-ray tube anode

Details Apparatus for rotatably supporting an X-ray tube anode Apparatus for rotatably supporting an X-ray tube anode

1991-04-05

1992-08-18

Church, Craig E.

X-ray or gamma ray systems or devices

Source

Electron tube

378125, H01J 3510

Patent

active

051406241

ABSTRACT:
In an X-ray tube having a stationary anode stem, a shaft joined to the tube anode, and a rotary bearing to support the shaft and anode for rotation relative to the stem, a preloading element is positioned in a bore formed in the stem and is axially displaceable to apply a selected preload to the bearing. The preloading element has a cylindrical outer surface provided with longitudinal spaced-apart grooves in parallel relationship with the bore axis. A locking ball positioned in each groove extends through a complementary hole formed through the stem to oppose rotational displacement of the preloading element with respect to the stem, while allowing axial displacement to take place. An annular retaining ring positioned around the anode stem engages the locking balls to urge them in toward the bore, and to oppose radial displacement of the preloading element.

REFERENCES:
patent: 4856039 (1989-08-01), Roelandse et al.
patent: 4914684 (1990-04-01), Upadhya

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