Compositions – Electrically conductive or emissive compositions – Metal compound containing
Patent
1979-08-14
1981-07-28
Lovering, Richard D.
Compositions
Electrically conductive or emissive compositions
Metal compound containing
338308, H01B 108, H01C 700
Patent
active
042809312
ABSTRACT:
An improved electrically resistive arc-suppressive material is disclosed for use in a television cathode ray tube. The tube includes a funnel with a conductive coating on the inner surface thereof and a neck enclosing an electron gun having snubber springs extending from an anode electrode. The arc-suppressive material according to the invention is deposited in an area between the conductive coating and the gun and in contact with the snubber springs. The improved resistive material comprises tin oxide (SnO.sub.2) doped with an antimony compound and calcined in a semi-sealed crucible for about two hours at a temperature in the range of 1306.degree. C. to 1326.degree. C., and blended with glass frit in a weight-percent ratio range of 45-55. The doping and the temperature range and duration are effective to inbue the material with a hardness resistant to plowing by the snubber springs, and electrical resistance value effective to suppress arcing.
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patent: 3287284 (1966-11-01), Norman
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patent: 4101803 (1978-07-01), Retsky et al.
patent: 4153857 (1979-05-01), Delsing et al.
Schwartz et al., "Recent Developments in Arc Suppression for Pictures Tubes," IEEE Transactions on Consumer Electronics, vol. CE-25, Feb. 1979, pp. 82-90 .
Delsing Dale
Fogelson Mark
Clarke, Jr. Ralph E.
Lovering Richard D.
Zenith Radio Corporation
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