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Class Information
Number: 378/139
Name: X-ray or gamma ray systems or devices > Source > Electron tube > With potential stress distribution
Description: Subject matter including means for decreasing local potential gradients such as would result in puncturing of the envelope, e.g., the means is typically a coating on the surface of the envelope, the resistivity of the coating being just low enough to drain off electrical charges which would otherwise accumulate during the operation of the tube.

Patents under this class:

Patent Number Title Of Patent Date Issued
8130910 Liquid-cooled aperture body in an x-ray tube Mar. 6, 2012
7881436 Method and apparatus of differential pumping in an x-ray tube Feb. 1, 2011
7783012 Apparatus for a surface graded x-ray tube insulator and method of assembling same Aug. 24, 2010
7773726 X-ray tube and X-ray source Aug. 10, 2010
7443958 Electron window for a liquid metalanode, liquid metal anode, X-ray emitter and method for operating such an X-ray emitter of this type Oct. 28, 2008
7430278 Insulation methods and arrangements for an X-ray generator Sep. 30, 2008
7340036 X-ray generator Mar. 4, 2008
7236568 Miniature x-ray source with improved output stability and voltage standoff Jun. 26, 2007
7236569 X-ray tube Jun. 26, 2007
7127036 Device for generating X-rays having a liquid metal anode Oct. 24, 2006
7020244 Method and design for electrical stress mitigation in high voltage insulators in X-ray tubes Mar. 28, 2006
5402464 High-voltage electronic tube Mar. 28, 1995
5159618 X-ray tube enclosure with resistive coating Oct. 27, 1992
5136625 Metal center x-ray tube Aug. 4, 1992
4618977 X-ray tube comprising an at least partly metal housing and an electrode which carries a positive high voltage with respect thereto Oct. 21, 1986
4247782 X-ray tube unit Jan. 27, 1981
4188559 Rotary anode X-ray tube Feb. 12, 1980
4053802 High-voltage vacuum tube, particularly an x-ray tube Oct. 11, 1977

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