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Patent Searching and Data


Title:
ROTATING ANODE TYPE X-RAY TUBE
Document Type and Number:
WIPO Patent Application WO/2016/113972
Kind Code:
A1
Abstract:
Provided is a rotating anode type X-ray tube allowing for a longer life span. In one embodiment of the present invention, the rotating anode type X-ray tube comprises a fixed axis (10) having a first surface intersecting with a parallel direction to the rotation axis, and a rotating body (20) supported by dynamic pressure bearings having a lubricant (M) filled in the gap to the fixed axis (10). The rotating body (20) comprises a first cylinder (21) having a second surface intersecting with the parallel direction to the rotation axis, a second cylinder (22) in contact with the second surface while facing the first surface through the lubricant (M), and a third cylinder (23) located on the opposite side from the first surface and the second surface while sandwiching the second cylinder (22) therebetween. A first threaded portion provided on the inner surface of the first cylinder (21) is tightened onto a second threaded portion provided on the outer peripheral surface of the third cylinder (23). A screw member (S4) is screwed into a third threaded portion provided on an internal peripheral surface of a hole passing through the third cylinder (23) in a parallel direction to the rotation axis. The forward end of the screw member (S4) pushes the second cylinder (22) against the second surface.

Inventors:
YONEZAWA TETSUYA (JP)
Application Number:
PCT/JP2015/080116
Publication Date:
July 21, 2016
Filing Date:
October 26, 2015
Export Citation:
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Assignee:
TOSHIBA ELECTRON TUBES & DEVIC (JP)
International Classes:
H01J35/10
Foreign References:
JP2004349157A2004-12-09
JP2014160604A2014-09-04
Other References:
See also references of EP 3246933A4
Attorney, Agent or Firm:
S & S International PPC (JP)
Patent business corporation スズエ international patent firm (JP)
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