Plural electron gun assembly

Claim 1

In an electron gun assembly of the type comprising three similar groups of coaxial, generally tubular electrodes symmetrically spaced from each other on longitudinally converging axes for forming three distinct converging electron beams, the combination comprising: support means including a pair of support studs for each electrode, the support studs for each group of electrodes being formed to lie adjacent corresponding support studs of the other groups; three elongate glass rods of generally rectilInear cross section engaging said support studs and rigidly supporting the same, the support studs of at least one pair of corresponding electrodes present in two adjacent electrode groups being in adjacency and having portions extending transversely of and imbedded in a corresponding one of said rods, said studs further including outer edge portions extending with angularity to said rods and intersecting corner edge portions thereof thereby spanning substantially the full width of said one rod, said rod including laterally bulged regions formed by heat softening of the rod and disposed at each of the regions of intersection of said last-recited support studs with said corner edge portion, said bulged regions preventing cracking of the glass of the rod, or protrusion of said imbedded stud portion laterally of said rod.