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:
Jun. 29, 2010
Filed:
Sep. 16, 2008
Yasuo Yoshii, Kawasaki, JP;
Chiharu Tadokoro, Yokohama, JP;
Yasutaka Ito, Kawasaki, JP;
Hitoshi Hattori, Yokohama, JP;
Hironori Nakamuta, Otawara, JP;
Tetsuya Yonezawa, Yaita, JP;
Yasuo Yoshii, Kawasaki, JP;
Chiharu Tadokoro, Yokohama, JP;
Yasutaka Ito, Kawasaki, JP;
Hitoshi Hattori, Yokohama, JP;
Hironori Nakamuta, Otawara, JP;
Tetsuya Yonezawa, Yaita, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
In a rotary anode X-ray tube, a disc portion is fitted into a rotary anode with a first gap therebetween and a fixed shaft is fitted into a rotary shaft to support the anode with a second gap therebetween. The disc portion and the fixed shaft are formed integral with each other to have a hollow portion therein. A cooling liquid is allowed to flow through the hollow portion. A liquid metal is filled in the first and second gaps. Dynamic pressure type bearings is formed in the second gap. A passage is formed to directly communicate the first gap to the second gap, whereby the liquid metal being directly supplied from the second gap to the first gap. Thus, the liquid metal can be fed rapidly and surely into the gap between the anode target and a cooling vessel.