X-ray tube

Details X-ray tube X-ray tube

2007-06-26

2007-06-26

Glick, Edward J. (Department: 2882)

X-ray or gamma ray systems or devices

Source

Electron tube

C378S136000

Reexamination Certificate

active

11171375

ABSTRACT:
The invention improves an insulating performance of an X-ray tube without increasing an insulation size. An X-ray tube in accordance with the invention keeps a mechanical strength of a glass insulation material and improves an insulation withstand voltage by a concavity and convexity, by forming a concavity and convexity having an arithmetic mean surface roughness of JIS B0601-1994 equal to or more than 1.0 μm and equal to or less than 10 μm in a vacuum side surface of a glass insulation material supporting electric conductors within a vacuum chamber for a range equal to or more than 2 mm from a position in an end of the electric conductors.

REFERENCES:
patent: 4943989 (1990-07-01), Lounsberry et al.
patent: 6570960 (2003-05-01), Kuzniar et al.
patent: 6819741 (2004-11-01), Chidester
patent: 2001-319607 (2001-11-01), None
O. Yamamoto, T. Hara, H. Matsuura and M. Hayashi, “Temporal Behavior of Surface Charge Accumulation in Bridged Vaccum Gaps”, Transactions on Dielectrics and Electrical Insulation, vol. 2, No. 2, Apr. 1995, Department of Electrical Engineering, Kyoto University, Kyoto, Japan.
I.D. Chalmers, J.H. Lei, B. Yang and W.H. Siew, “Surface Charging and Flashover on Insulators in Vacuum”, Transactions on Dielectrics and Electrical Insulation, vol. 2 No. 2, Apr. 1995, Department of Electronic and Electrical Engineering, University of Strathclyde, Glassgow, UK.

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