Rotary anode X-ray tube

US4167671A · kind A · utility

Assignees

• Kernforschungsanlage Lulich Gesellschaft mit beschrankter Haftung · DE
• Siemens Aktiengesellschaft · DE

Inventors

• Karl Boden
• Johan K. Fremerey · Bonn, DE
• George Comsa · Jülich, DE
• Friedrich Gudden
• Gunther Appelt · Erlangen, DE
• Rudolf Friedel
• Ernst Geldner · Radebeul, DE

Key dates

• Filing date: Apr 12, 1978
• Grant date: Sep 11, 1979
• Expiry date: Apr 12, 1998

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01J35/103
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

Tubular electromagnetic components are mounted on the drive shaft of the ary anode of an X-ray tube and external magnet windings are provided both for maintaining the drive shaft in an axial position corresponding to a working position of the anode and for shifting the drive shaft to open a slip contact at one end thereof, thus providing a magnetic switch for the anode supply voltage. In addition, windings are provided through which a controlled current flows to provide a radially stabilized position for the shaft and thus constitute magnetic bearings that are free of friction. When one of the contacts of the magnetic switch is spring-mounted, the coil that does the switching can also be used to adjust the axial position of the anode so as to work with a different cathode.