EP 0349386 B1 19920527 - X-RAY TUBE WITH A VARIABLE FOCAL SPOT ADJUSTING ITSELF TO THE CHARGE
Title (en)
X-RAY TUBE WITH A VARIABLE FOCAL SPOT ADJUSTING ITSELF TO THE CHARGE
Publication
Application
Priority
FR 8808958 A 19880701
Abstract (en)
[origin: EP0349386A1] The problems are resolved of temperature holding in both the anode (2) and the cathode (1) by making a flat cathode (7) engraved in a device (8) for running focusing. It is shown that, depending on the shape of this device, the heat flow at the anode is constant whatever the charge of the tube. <IMAGE>
IPC 1-7
IPC 8 full level
H01J 35/06 (2006.01); H01J 35/14 (2006.01)
CPC (source: EP US)
H01J 35/066 (2019.04 - EP US); H01J 35/147 (2019.04 - EP US)
Citation (examination)
EP 0164665 A1 19851218 - TOSHIBA KK [JP]
Designated contracting state (EPC)
DE ES GB IT NL
DOCDB simple family (publication)
EP 0349386 A1 19900103; EP 0349386 B1 19920527; DE 68901636 D1 19920702; ES 2032128 T3 19930101; FR 2633774 A1 19900105; FR 2633774 B1 19910208; JP 2840614 B2 19981224; JP H0254847 A 19900223; US 5060254 A 19911022
DOCDB simple family (application)
EP 89401760 A 19890622; DE 68901636 T 19890622; ES 89401760 T 19890622; FR 8808958 A 19880701; JP 16969189 A 19890630; US 37388589 A 19890630