X-ray tube

Details X-ray tube X-ray tube

2010-07-15

2011-10-04

Kao, Glen (Department: 2882)

X-ray or gamma ray systems or devices

Source

Electron tube

C378S140000

Reexamination Certificate

active

08031839

ABSTRACT:
According to one embodiment, a distance from an X-ray tube central axis to an outer side surface of a cathode electron gun in a direction perpendicular to the longitudinal direction of a filament coil is made less than a distance from the X-ray tube central axis to an outer side surface of the cathode electron gun in the longitudinal direction of the filament coil, and a distance from the X-ray tube central axis to an X-ray radiation window in the direction perpendicular to the longitudinal direction of the filament coil is made less than a distance from the X-ray tube central axis to an X-ray radiation window in the longitudinal direction of the filament coil.

REFERENCES:
patent: 3138729 (1964-06-01), Henke
patent: 2005/0175152 (2005-08-01), Smith
patent: 2007/0092064 (2007-04-01), Kuribayashi et al.
patent: 0 432 568 (1991-06-01), None
patent: 05-314937 (1993-11-01), None
patent: 08-329869 (1996-12-01), None
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patent: 10-255701 (1998-09-01), None
patent: 2005-228696 (2005-08-01), None
patent: 2006-278216 (2006-10-01), None
patent: 2006-524548 (2006-11-01), None
patent: WO 2006/009053 (2006-01-01), None
Translation for JP 2005-228696 A published on Aug. 25, 2005.
International Search Report for PCT/JP2009/050571 mailed Mar. 10, 2009.
European Search Report dated May 11, 2011.

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