Longitudinal rib embossment in tri-apertured, substantially planar electrode

An improvement in a plural electrode in-line multi-beam cathode ray tube electron gun assembly integrated by a plurality of longitudinal insulative support means, said improvement comprising:

• a one-piece electrode member of substantially planar formation having opposed sides and end portions and definitive 1--1' and w--w' axes therein, said member having at least one supporting projection extending from each side thereof to provide positional means for attachment of said member to said assembly supportive means;
• said member having an alpha planar level from which a plurality of individual longitudinally aligned cup-like shapings are impressed, each of said cups having a formed side wall and a substantially flat bottom with an axial aperture therethrough, the bottoms of said cup being oriented in an omega planar level parallelly spaced from said alpha planar level, said plurality of aligned cups being treated within said member as a longitudinal unitized portion having a continuous turned-perimeter thereabout defining an encompassing rim extending normal to said alpha planar level, the longitudinal sides of said cup-encompassing portion being parallel with said 1--1' axis, said electrode member having a substantially longitudinal rib embossment formed on either side thereof, with at least one complementary rib projecting outward therefrom in a normal manner to form a rib combination, each of said longitudinal rib embossments being transitionally configurated from the terminal region of the respective longitudinal portion of the turned perimeter of said cup encompassing unit, the complementary rib means of said combination being oriented to extend through each of said supporting projections.