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:
Mar. 20, 2018
Filed:
Feb. 26, 2014
Applicant:
Toshiba Electron Tubes & Devices Co., Ltd., Otawara-shi, JP;
Inventors:
Masataka Ueki, Nasushiobara, JP;
Yasutaka Ito, Kawasaki, JP;
Assignee:
Toshiba Electron Tubes & Devices Co., Ltd., Otawara-shi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 35/10 (2006.01); F16C 17/02 (2006.01); F16C 17/10 (2006.01);
U.S. Cl.
CPC ...
H01J 35/101 (2013.01); F16C 17/026 (2013.01); F16C 17/102 (2013.01); H01J 35/106 (2013.01); H01J 2235/1053 (2013.01); H01J 2235/1086 (2013.01);
Abstract
According to one embodiment, a rotating anode X-ray tube includes a fixed shaft, a rotor, a lubricant, target, and a supporting member. The fixed shaft includes a small-diameter portion provided with a first radial bearing surface including first grooved surfaces, and a large-diameter portion provided with a second radial bearing surface including second grooved surfaces. The rotor includes a third radial bearing surface. The lubricant is filled in a gap between the fixed shaft and the rotor, and drawn by the first and second grooved surfaces.