Color television picture tube structure and method of manufactur

Details Color television picture tube structure and method of manufactur Color television picture tube structure and method of manufactur

1976-03-17

1978-04-11

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313477R, 313482, H01J 2907, H01J 3120

Patent

active

040841138

ABSTRACT:
A rimless face panel is mounted on a funnel-shadow mask color selection device subassembly for a color television picture tube construction by indexing means establishing a unique positional relationship between the face panel and the mask. Bosses are formed on the inner walls of the funnel to receive mask support brackets which engage spring arms of brackets attached to the mask for precise spacing of the mask from the seal edge of the funnel. In a first embodiment, tabs are provided on the spring arms for engaging slots in the face panel to establish the positional relationship between the face panel and the mask during lighthousing and sealing. In a second embodiment, the tabs are formed on the mask support brackets. In a third and a fourth embodiments, studs in the face panel engage elongated apertures in the mask support brackets.

REFERENCES:
patent: 3971490 (1976-07-01), Conger
patent: 3997811 (1976-12-01), Tom et al.

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