Electric lamp and discharge devices – Cathode ray tube – Ray generating or control
Patent
1995-05-09
1996-04-16
Yusko, Donald J.
Electric lamp and discharge devices
Cathode ray tube
Ray generating or control
315 3951, H01J 2946
Patent
active
055085830
ABSTRACT:
A cathode structure for a magnetron used in a microwave oven comprises a straight central cathode support rod which extends through both a lower end cap and a filament cathode, and which is fixed to an upper end cap. An outer cathode support rod extends parallel to the central cathode support rod and has an upper end fixed to the lower end cap. A ceramic stem is formed with (i) an outer holding hole for fixing a lower end of the outer cathode support rod, (ii) a central holding hole for fixing a lower end of the central cathode support rod, and (iii) an annular groove. A conductive metal plate is fixed to the upper surface of the ceramic stem for connecting the central cathode support rod to a first outer connecting lead. A conductive terminal plate has an outer end fixed to the upper surface of the ceramic stem and an inner end bent upwardly and spaced from the upper surface of the ceramic stem for connecting electrically the central cathode support rod to a second outer connecting lead and for supporting the central cathode support rod.
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Richardson Lawrence D.
Samsung Electronics Co,. Ltd.
Yusko Donald J.
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