U.S. Philips Corporation

Gerardus A Cornelissen

Cornelis A Jacobs

Evert M Kamerbeek

Antonius J Driessen

Jacobus Robertus De Jong

Andre J Van Herck

Hendrik J Gerrits

The invention relates to an X-ray tube. The tube has a rotary anode which is rotatably journalled by means of a magnetic bearing having a stator comprising a magnet yoke which intersects the outer walls of the tube and which is magnetizable by magnets arranged outside the tube. The magnet yoke comprises radially extending pole faces which enclose gaps in conjunction with radially extending pole faces of a rotor connected to the rotary anode. The rotor consists of a soft-magnetic disk, which provides the magnet yoke which closes the magnet yoke of the stator.

X-ray tube having a magnetically supported rotary anode

Electric discharge lamp having a cylindrical ceramic discharge vessel, closed in a vacuum-tight manner, the wall of which incorporates a current feedthrough member, which extends outside the discharge vessel and is provided there, for bearing on the discharge vessel, with at least one outwardly-extending tongue formed by disturbing the outer surface of the current feedthrough member.

Gas discharge lamp having supporting tongue formed from electrode

A high-pressure metal vapor discharge lamp having a ceramic discharge vessel, the end plug being fused by means of sintering to the discharge vessel slightly displaced inwards, sealing glass being disposed in the space enclosed by the end plug, the upright edge of the discharge vessel and the current supply element.

High pressure metal vapor discharge lamp and seal structure therefor

A high-pressure sodium vapor discharge lamp which is provided with a discharge tube and an outer envelope which envelopes this tube. In accordance with the improvement there are disposed in the space between the discharge tube and the outer envelope both a capacitor and a glow discharge starter which are both in parallel with the discharge tube. Consequently an external lamp starter is superfluous. In addition the lamp base may be relatively small.

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Eindhoven, Netherlands

Gerardus A Cornelissen