US 2006/0133578 A1 · Radiation emission device having a bearing and method of manufacture

Abstract

A valve is provided to fill a chamber for holding a rotation shaft of a rotating anode in an X-ray tube. The valve has a needle supported on a seat. The needle maintains the vacuum in the tube. A sleeve can engage in the valve. The sleeve is hollow and has a cavity. This cavity can be connected to the vacuum or to a bottle under vacuum filled with a lubricant liquid. The sleeve is used to handle the needle. The sleeve furthermore bears on a rim of the valve by an O-ring joint. This joint maintains the vacuum when the needle is raised and when the tube under vacuum is connected to the cavity of the sleeve.

Claims21

Dependent claims

A radiation emission device comprising:

an enclosure in which the radiation is produced;
in the enclosure a cathode, an anode situated so as to be facing the cathode and rotating on a shaft, and an anode shaft support;
the support comprising a chamber for holding the anode shaft;
the chamber having means for filling or pumping of the chamber with a lubricant fluid;
the means for filling or pumping being provided with an embedded valve comprising:
a plugging needle capable of shifting in the means for filling or pumping;
a removable sleeve getting secured to the needle;
the sleeve being hollow and being provided with means for handling the needle;
and
the sleeve being provided with a joint and/or the needle being provided with a peripheral joint.

7 more elements

Dependencies are inferred from the claim text.

Radiation emission device having a bearing and method of manufacture

Life of this patent

Radiation emission device having a bearing and method of manufacture

Life of this patent

Abstract

Claims21