Electric lamp and discharge devices – Cathode ray tube – Plural beam generating or control
Patent
1988-08-30
1990-06-05
O'Shea, Sandra L.
Electric lamp and discharge devices
Cathode ray tube
Plural beam generating or control
313446, H01J 2902, H01J 2948
Patent
active
049316915
ABSTRACT:
An electron gun assembly for use in a color CRT includes a pair of insulating support rods, three inline indirectly heated cathode 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.
REFERENCES:
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Coughlin Jr. Vincent J.
Irlbeck Dennis H.
O'Shea Sandra L.
RCA Licensing Corp.
Tripoli Joseph S.
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