X-ray or gamma ray systems or devices – Source – Electron tube
Reexamination Certificate
2007-03-27
2007-03-27
Glick, Edward J. (Department: 2882)
X-ray or gamma ray systems or devices
Source
Electron tube
C378S125000, C378S130000, C378S132000, C378S144000
Reexamination Certificate
active
10710877
ABSTRACT:
An imaging tube assembly (11) for a computed tomography (CT) system (10) includes an insert (60) that has a vacuum chamber (72). An anode (58) resides within the vacuum chamber (72) and rotates on a shaft (66) via one or more bearing (70). In one embodiment, a seal (52) resides between the insert (60) and the shaft (66). The seal (52) prevents the passage of a gas (80) into the vacuum chamber (72). In another embodiment, a pressure transition chamber (104) is coupled to an insert (60″) and a shaft (66″). The pressure transition chamber (104) has an associated middle fluid pressure that is between an internal fluid pressure of the vacuum chamber (104) and an external fluid pressure of said insert (60″).
REFERENCES:
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patent: 5799951 (1998-09-01), Anderson et al.
patent: 5978447 (1999-11-01), Carlson et al.
patent: 6212256 (2001-04-01), Miesbauer et al.
patent: 6496564 (2002-12-01), Price et al.
Hallman Darren L.
Simpson James E.
Smith Walter
Unger Christopher D.
General Electric Company
Glick Edward J.
Vogel Peter J.
Yun Jurie
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