X-ray or gamma ray systems or devices – Source – Electron tube
Reexamination Certificate
2007-05-08
2007-05-08
Glick, Edward J. (Department: 2882)
X-ray or gamma ray systems or devices
Source
Electron tube
C378S132000
Reexamination Certificate
active
10927105
ABSTRACT:
In a rotary anode type X-ray tube, a rotary anode and a rotary structure supporting the anode are arranged within the vacuum envelope. A stationary shaft has a middle section which is fitted into a cylindrical portion of the rotary structure, and a dynamic pressure type radial bearing is arranged between the cylindrical portion and the middle section. The stationary shaft also has a first section between one end of the middle section and one end of the stationary shaft, and a second section between the other end of the middle section and the other end of the stationary shaft, which are fixed to the vacuum envelope. A transverse stiffness of the second section is set to be larger than a transverse stiffness of the first section, and a center of gravity is positioned in the middle section.
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Fukushima Harunobu
Hattori Hitoshi
Iwase Mitsuo
Kitade Koichi
Nakamuta Hironori
Glick Edward J.
Kabushiki Kaisha Toshiba
Kao Chih-Cheng Glen
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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