Abgeschlossener, hochspannungs- und strahlensicherer Behaelter fuer Roentgenroehren

379,801. R÷ntgen-ray tubes. SIEMENS-REINIGER-VEIFA GES. FœR MEDIZINISCHE TECHNIK, 58, Mohrenstrasse, Berlin. June 30, 1931, No. 18885. Convention date, July 8, 1930. [Class 39 (i ). ] A closed holder affording protection against high potentials and radiation comprises two insulating sheaths 1, 2 (e.g. of porcelain) surrounding the tube 18 and united by an earthed metal sleeve 4 through which is led the inlet and outlet pipes of an anode cooling system. The sheaths 1, 2 have converging lead-in sockets 7, 8 strengthened by webs 9, for the earthed metal sheathed cables 13. The sheaths 1, 2 have metal sheathing connected to the metal centre 4 and the cables 13. For protection against radiation the metal sheathing may be of lead or lead salts may be included in the porcelain composition of the sheaths 1, 2. The cooling fluid enters through a connection 21 and an insulating tube 22, and may leave by a pipe surrounding these. If an insulating cooling medium is not used (e.g. oil or compressed air) the resistance along the fluid between the anode and the metal centre 4 must be high. For this purpose the pipe system includes inflow and outflow coils 23, 24.