Rotary anode X-ray tube

Details Rotary anode X-ray tube Rotary anode X-ray tube

1982-07-26

1984-08-28

Church, Craig E.

X-ray or gamma ray systems or devices

Source

Electron tube

378130, H01J 3504

Patent

active

044688016

ABSTRACT:
An evacuated casing has outer and inner tubes respectively covering the outer and inner peripheries of a hollow cylindrical rotor. Ring members of a ferromagnetic material are provided in the inner wall of the rotor and face permanent magnets, which are provided on the inner periphery of the inner tube and are magnetized in the radial directions of the rotor. The permanent magnets are fitted on a cylindrical yoke between first and second poles formed thereon, the fluxes being inserted in the rotor via the inner tube. The first poles are disposed to face the respective ring members, while the second pole is disposed to face the opposed end faces of the ring members. With this arrangement, contactless magnetic bearings are formed to support the rotor stably.

REFERENCES:
patent: 3878395 (1975-04-01), Seifert et al.
patent: 4040681 (1977-08-01), van der Heide
patent: 4081707 (1978-03-01), Hartl et al.
patent: 4167671 (1979-09-01), Boden et al.

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