X-ray or gamma ray systems or devices – Source – Electron tube
Reexamination Certificate
2006-10-04
2010-06-08
Yun, Jurie (Department: 2882)
X-ray or gamma ray systems or devices
Source
Electron tube
C378S122000, C378S143000
Reexamination Certificate
active
07734015
ABSTRACT:
The present invention relates to an X-ray tube in which X-rays are generated by making electrons from an electron gun incident onto an X-ray target of an anode, disposed inside an anode housing unit, and the generated X-rays are taken out from an X-ray emission window. The anode has a straight main body and a protruding portion, extending along an axis line direction of the main body from a tip of the main body. An inclined surface, onto which the electrons emitted from the electron gun collide, and a pair of side surfaces, disposed in parallel while sandwiching the inclined surface, are formed on the protruding portion. A distance between the pair of side surfaces of the protruding portion is shorter than a width of the main body in the same direction as the distance.
REFERENCES:
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patent: 5563923 (1996-10-01), Okada et al.
patent: 6229876 (2001-05-01), Enck et al.
patent: 6381305 (2002-04-01), Okada et al.
patent: S39-12336 (1964-05-01), None
patent: S52-20171 (1977-02-01), None
Inazuru Tutomu
Okada Tomoyuki
Drinker Biddle & Reath LLP
Hamamatsu Photonics K.K.
Yun Jurie
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