EP 2225769 A1 20100908 - PRECESSION ANODE X-RAY TUBE
Title (en)
PRECESSION ANODE X-RAY TUBE
Title (de)
RÖNTGENRÖHRE MIT ROTATIONSANODE
Title (fr)
TUBE À RAYONS X AVEC ANODE EN PRÉCESSION
Publication
Application
Priority
- GB 2008003979 W 20081128
- GB 0723513 A 20071130
Abstract (en)
[origin: GB2455140A] An X-ray tube 1 is described having a filament electrode 7 for generating electrons 5, and an anode 8 which comprises an elongate member 17 having a fixed point 16 relative to the sealed housing of the tube and an end that is moveable relative to the sealed housing. The longitudinal axis of the elongate member 17 in a rest position is laterally displaced relative to the path of the accelerating electrons, whereby a spherical target surface on the movable end of the member 17 may be moved along an elliptical oscillatory path (see Figs 6-8) relative to the impinging electrons 5 such that the spatial location of X-ray 13 generation in the tube is invariant relative to the sealed housing, thereby spreading localised heating caused by the X-ray generation over a greater portion of the target surface. The member 17 may be a flexible monolithic rod and is typically driven such that the anode precesses about the X-ray beam 13.
IPC 8 full level
H01J 35/28 (2006.01)
CPC (source: EP GB)
H01J 35/28 (2013.01 - EP GB)
Citation (search report)
See references of WO 2009068891A1
Citation (examination)
DE 1193616 B 19650526 - NAGEL & GOLLER
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
GB 0723513 D0 20080109; GB 2455140 A 20090603; EP 2225769 A1 20100908; JP 2011505657 A 20110224; WO 2009068891 A1 20090604; WO 2009068891 A4 20090716
DOCDB simple family (application)
GB 0723513 A 20071130; EP 08854029 A 20081128; GB 2008003979 W 20081128; JP 2010535455 A 20081128