The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 2019
Filed:
Oct. 19, 2015
Applicant:
Hitachi, Ltd., Tokyo, JP;
Inventor:
Yoshitaka Seki, Tokyo, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 35/10 (2006.01); H01J 35/16 (2006.01);
U.S. Cl.
CPC ...
H01J 35/103 (2013.01); H01J 35/16 (2013.01); H01J 2235/08 (2013.01); H01J 2235/108 (2013.01); H01J 2235/12 (2013.01);
Abstract
There is provided an X-ray tube device having a configuration for preventing peeled-off solid lubrication films from scattering in an X-ray tube even when the solid lubrication film peels off a rotary bearing. The X-ray tube device includes: an anode () that is irradiated with an electron beam, thereby emitting X-rays; a rotary bearing () that rotatably supports the anode (); a solid lubrication film which is formed on a front surface of the rotary bearing () and into which a ferromagnet is mixed from the rotary bearing (); and an attractor () which attracts, with a magnetic force, the solid lubrication film that peels off the rotary bearing ().