Bearing arrangement for the rotating anode of an x-ray tube
AssigneeSiemens Aktiengesellschaft
InventorWolfgang Kutschera
Life of this patent
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Abstract
The invention is directed to a bearing for the rotating anode of an x-ray tube comprising at least one rolling bearing suitable for absorbing axial forces which is loaded with an axially directed force for suppressing the bearing play. Magnets are provided which generate the axially directed force in non-contacting fashion.
Claims10
A bearing arrangement for use in an x-ray tube having a rotating anode with an axially extending shaft, said arrangement comprising:
- rolling bearing means for bearing said shaft and for absorbing axial forces;
- and
- magnet means for generating an axially directed force acting on said rolling bearing means for suppressing play in said rolling bearing means.
A bearing arrangement as claimed in claim I wherein said x-ray tube has an evacuated housing, and wherein said magnetic means comprises:
- a magnet connected to said housing and a ferromagnetic component spaced from said magnet, and wherein said shaft has at least a portion thereof containing ferromagnetic material forming said ferromagnetic component.
A bearing arrangement as claimed in claim I wherein said x-ray tube has an evacuated housing, and wherein said magnetic means comprises:
- a magnet connected to said shaft and a ferromagnetic component spaced therefrom, said housing having at least a portion thereof containing ferromagnetic material forming said ferromagnetic component.
A bearing arrangement as claimed in claim I wherein said rolling bearing means comprises:
- an axially fixed ball bearing;
- and
- an axially movable ball bearing.
Dependencies are inferred from the claim text.