Method of producing a high voltage stable cathode for an...

Details Method of producing a high voltage stable cathode for an... Method of producing a high voltage stable cathode for an...

2009-07-01

2011-10-18

Ton, Toan (Department: 2889)

Electric lamp and discharge devices

Electrode and shield structures

Tubular or hollow sleeve

C313S038000, C313S238000

Reexamination Certificate

active

08040035

ABSTRACT:
A method of producing a cathode for use in an x-ray tube assembly is provided including machining an emission aperture into a cup emission surface portion of a cup structure. The cup structure is comprised of a cup base portion opposite the cup emissions surface portion. Electro-discharge machining is used to form an electro-discharge machining slot into the cup structure to provide access to the interior of the cup structure. Electro-discharge machining is used to form a transverse coil chamber within the interior by way of the electro-discharge machining slot such that the transverse coil chamber is formed between the cup base portion and the cup emissions surface portion while retaining an essentially contiguous emissions surface perimeter surrounding the emission aperture.

REFERENCES:
patent: 2002/0187711 (2002-12-01), Kautz et al.

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