Abstract: A cathode ray tube envelope resistant to implosion includes a funnel member having a flared portion sealed to a skirt portion joined to a viewing portion of a face plate member having a mould line rearward of the skirt and viewing portion jointure. A pair of "U" shaped flat rimbands having a re-enforcing ridge encircle the skirt portion with a forward edge intermediate the mould line and jointure of the skirt and window portions. A tension strap is applied intermediate the forward edge and re-enforcing ridge of the rimbands.The implosion-resistant envelope is fabricated by sealing the flared portion of the funnel member to the skirt portion of the face plate member encircling the skirt portion with the "U" shaped rimbands with the forward edge of the rimbands intermediate the jointure of the window and skirt portions and the mould line and compressing the rimbands with a strap member disposed intermediate the forward edge and re-enforcing ridge of the rimbands.

Abstract: A connective improvement disposed on the exterior of a cathode ray tube includes the metallic fracture-protective member peripherally surrounding the panel as an integral part of the circuitry connecting the exterior coating on the funnel portion of the tube envelope with appropriate grounding circuitry in the chassis. A discrete deposition of connective conductive material is applied to the exterior of the funnel and panel areas, whereof the funnel disposed section has the exterior funnel coating overlaid thereon. The opposed panel-disposed section makes positive connection with the peripheral protective member, which in turn, has a connective element associated therewith to complete the grounding circuitry without disturbing the intervening conductive material or the funnel coating associated therewith.