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US 4,064,412 AGranted
Cathode ray tube base
AssigneeGTE Sylvania Incorporated
InventorAlfred D. Johnson
Life of this patent
Estimating the term…
Abstract
A base for a cathode ray tube includes at least one tube pin isolating means associated therewith to provide arc prevention between adjacent tube pins which can have up to a 12 KV potential difference therebetween.
Claims3
A base for a cathode ray tube comprising:
- a substantially flat, circular rim having a given diameter;
- a plurality of tube pin receiving apertures extending through said rim, said apertures being spaced inwardly from the outer circumference of said rim and being annularly arrayed;
- a hollow, substantially centrally located crown positioned on said rim and projecting therefrom adapted to receive the terminus of an exhaust tubulation;
- and at least one tube pin isolating means associated with at least one of said tube pin receiving apertures;
- said isolating means comprising an elongated, circumferential wall extending outwardly from said rim and forming an integral extension with the wall of said crown and being substantially the same height as said crown, and further having a first diameter substantially larger than the diameter of said tube pin extending substantially the full height of said wall;
- and a second diameter and a third diameter concentric with said first diameter forming a circular slot about said first diameter, said slot having a height substantially less than the height of said wall.
3 more elements
Dependencies are inferred from the claim text.