H - Electricity – 01 – J
Patent
H - Electricity
01
J
338/18, 355/3, 3
H01J 29/18 (2006.01) H01C 7/00 (2006.01) H01J 29/88 (2006.01) H01J 29/94 (2006.01) H01J 29/96 (2006.01)
Patent
CA 1116305
ABSTRACT OF THE DISCLOSURE The disclosure depiots in a television cathode ray tube having a getter containing a vaporizable, electrically conductive, gas adsorptive getter material, an improvement comprising an electrically resistive element for arc suppress- sion, internal voltage division, static elimination, RC signal coupling or the like. The resistive element is composed of a high resistivity material compatible with a clean, high-vacuum environment. The element is so widely and deeply cavitated and contorted at and below its nominal surface that the real surface of the element is shadowed and very greatly extended in area relative to the nominal surface of the element. The effect of this is that when the getter is flashed, the coating of conductive getter material deposited on the element is effectively dispersed and fragmented into isolated conductive islands. The result is to render tolerably insignificant the tendency of arc currents to travel over the surface of the element and thereby by-pass the body of the element.
301638
Delsing Dale
Fogelson Mark
Macrae & Co.
Zenith Radio Corporation
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