Electron gun assembly having a reinforced heater tab with...

Details Electron gun assembly having a reinforced heater tab with... Electron gun assembly having a reinforced heater tab with...

H - Electricity

01

J

313/35.14

H01J 29/48 (2006.01) H01J 1/18 (2006.01) H01J 29/04 (2006.01) H01J 29/50 (2006.01)

Patent

CA 1312909

RCA 85,218 ABSTRACT OF THE DISCLOSURE An electron gun assembly for use in a color CRT includes a pair of insulating support rods, three inline indirectly heated cathodes disposed between the support rods, a heater for each of the cathodes, and a pair of improved, reinforced heater tabs. The heater includes a pair of heater legs which are attached to the heater tabs. Heater bead straps are provided for attaching the heater tabs to the support rods. The electron gun also includes a plurality of electrodes for focusing and accelerating an electron beam generated by the cathodes. The reinforced heater tabs comprise a main body portion including a first and a second part. Each of the parts is attached to one of the heater legs. Each of the heater tabs has a pair of outwardly directed feet, each of which is connected to one of the parts of the main body portion by a pair of substantially orthogonal legs extending therebetween. The reinforced heater tabs include a first reinforcing structure extending between the parts of the main body portion and the legs, and a second reinforcing structure extending between the legs and the feet, to maintain the rigidity of the heater tabs. The first reinforcing structure also provides locating means for a conformal heater tab associated with the center cathode of the electron gun.

606261

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