Leakage inhibiting shield

Claim 2

Metallic shielding means for inhibiting leakage between the stem leads of an electron discharge device employing a wafer closure member wherethrough a plurality of supportive and electrical connective leads are hermetically disposed in a spaced array, said shielding means being a substantially infundibular shaped member formed for separate attachment to individual leads of said wafer and comprising: a hollow conic section having a conical wall portion, an open apex, an opposed basal perimeter and a longitudinal axis extending therethrough; an integral terminal section extended from said open apex to provide a lead attachment provision; an annular projecting portion extending substantially outward from said basal perimeter, said projecting portion having a defined outer periphery; and a downward turned portion integrally extending from the outer periphery of said annular projection, said projection and said downward turned portion being of an integral shaping extending longitudinally beyond said basal perimeter to provide structural reinforcement and rigidity, and improved shielding.

Claim 3

Improved shielding means according to claim 1 wherein said annular projecting portion is formed as a planar ledge extending in a manner substantially normal to said axis.

Claim 4

Improved shielding means according to claim 2 wherein said downward turned portion is formed as a skirt downstanding from said periphery in a manner substantially normal to the plane of said annular projecting ledge.

Claim 5

Improved shielding means according to claim 2 wherein said downward turned portion is formed from the periphery of said planar projecting portion as an inwardly turned annular roll.

Claim 6

Improved shielding means according to claim 1 wherein said annular projecting portion is shaped as a substantially continuous concentric depression formed intermediate said basal perImeter and said projection outer periphery.

Claim 7

Improved shielding means according to claim 5 wherein said downward turned portion is formed as a closed skirt downstanding from the periphery of said annular projecting portion.

Claim 8

Improved shielding means according to claim 5 wherein said downward turned portion is formed from the periphery of said annular projecting portion as an inwardly turned annular roll.

Claim 9

In a cathode ray tube having a wafer closure member wherethrough a plurality of electrical connective and supportive leads are arranged to accommodate an electron gun, said leads being hermetically disposed in spaced array whereof each of said leads has an encircling bead of glass therearound integral to the interior surface of said closure member; a plurality of substantially infundibular shaped metallic shielding members individually attached to separate leads proximal to said beads for inhibiting electrical leakage between said leads, each of said shielding members comprising: a hollow conic section having a conical wall portion, an open apex, an opposed basal perimeter and a longitudinal axis extending therethrough; an integral terminal section extended from said open apex to provide a channel for accommodating a respective lead whereat attachment is effected; an annular projecting portion extending substantially outward from said basal perimeter, said projecting portion having an outer periphery; and a downward turned portion integrally extending from the outer periphery of said annular projection, said projection and said downward turned portion being of an integral shaping extending longitudinally beyond said basal perimeter to provide beneficial structural reinforcement and rigidity, and improved leakage inhibition by effecting increased shielding of the bead area.

Claim 10

In a cathode ray tube having a wafer closure member wherethrough a plurality of electrical connective and supportive leads are arranged to accommodate an electron gun, said leads being hermetically disposed in spaced array whereof each of said leads has an encircling bead of glass therearound integral to the interior surface of said closure member; a plurality of substantially infundibular shaped metallic shielding members individually attached to separate leads proximal to said beads for inhibiting electrical leakage between said leads, each of said shielding members comprising: a hollow conic section having a conical wall portion, an open apex, an opposed basal perimeter and a longitudinal axis extending therethrough; an integral terminal section extended from said open apex to provide a channel for accommodating a respective lead whereat attachment is effected; an annular projecting portion extending substantially outward from said basal perimeter, said projecting portion having an outer periphery; and a downward turned portion integrally extending from the outer periphery of said annular projection, said projection and said downward turned portion being of an integral shaping extending longitudinally beyond said basal perimeter to provide beneficial structural reinforcement and rigidity, and improved leakage inhibition by effecting increased shielding of the bead area.