Abstract: An evacuated envelope is formed with a portion of larger diameter and tubular portions extending along the axis on both sides of the portion of larger diameter in opposite directions. A target with a rotatable anode is arranged in the portion of larger diameter. A pair of shafts arranged on the tube axis and fixed on both sides of this target are arranged in the tubular portions. Each shaft has at least one flange of insulating material on the side facing the target and on its periphery is provided with a metal tube constituting a rotor of a magnetic bearing. On the outermost side of the tubular portion there are arranged a magnetic field generating device and a magnetic drive device that rotates the rotatable anode target.

Abstract: An x-ray tube device with an anode target capable of rotation and a cathode which generates electrons causing them to collide with the target set in a vacuum envelope, and with a shaft which supports and rotates the anode projecting outside the envelope. This x-ray tube device has a structure such that the target is cooled by coolant flowing through coolant channels in the shaft. A vacuum seal is maintained by seal means such as magnetic fluid seal between the envelope and the rotating shaft. The envelope and coolant channels are best maintained at ground potential, and thus have an intermediate potential, with high positive and negative voltages supplied to the anode target and cathode.

Abstract: A rubberized asphalt composition which comprises a moisture-curing diene series liquid rubber, asphalt and aggregates, and a process for producing same. Liquid rubber having a molecular weight of from 500 to 50,000 and having an isocyanate group or an isocyanate group blocked by phenol or acetoxime as a functional group at the terminals of the molecule is preferably utilized. The liquid rubber comprises from 4 to 10% by weight of the total of liquid rubber and asphalt.

Abstract: A charged particle beam scanning apparatus includes a deflector for a beam of charged particles which includes a magnetic field generator to supply an incoming electron beam with a magnetic field whose intensity grows higher in the opposite direction to that in which the beam is deflected.