X-ray tube comprising an at least partly metal housing and an electrode which carries a positive high voltage with respect thereto
 In an X-ray tube comprising a metal housing portion and an electrode which can be connected to a positive high voltage with respect thereto and which is mounted on a ceramic insulator portion, a conical insulator portion is enclosed by a wall portion, at least the inner surface of which has an insulating effect. A screening sleeve which electrically screens the connection between the insulator portion and the electrode projects into a recess in the wall portion. 
U.S. Philips Corporation
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inventional additional inventional
Diethard Horst Walter
Peter Brettschneider Hartl