Gte Sylvania Incorporated

Ralph E Neuber

Charles H Rehkopf

Anthony V Gallaro

Charles A Davis

Apparatus for high voltage conditioning cathode ray tubes having internal electrodes connected to external base pins includes a container having a pair of electrical contact members therein and passing therethrough to a high voltage potential source and to a conditioning potential source with a liquid having a dielectric strength greater than the dielectric strength of air disposed within the container for immersing the base pins therein to effect contact thereof with the electrical contact members of the container. The high voltage conditioning of the cathode ray tube is effected by a process which includes the steps of indexing a cathode ray tube and first container having electrical contact members therein surrounded by a liquid having a dielectric strength greater than the dielectric strength of air to effect immersion of the base pins of the cathode ray tube in the liquid and contact thereof with the contact members of the container and indexing the cathode ray tube and second container containing contact members connected in common to circuit ground to effect arcing to all of the cathode ray tube electrodes in common.

Process for high voltage conditioning cathode ray tubes

Apparatus for high voltage conditioning cathode ray tubes having internal electrodes connected to external base pins includes a container having a pair of electrical contact members therein and passing therethrough to a high voltage potential source and to a conditioning potential source with a liquid having a dielectric strength greater than the dielectric strength of air disposed within the container for immersing the base pins therein to effect contact thereof with the electrical contact members of the container. The high voltage conditioning of the cathode ray tube is effected by a process which includes the steps of indexing a cathode ray tube and first container having electrical contact members therein surrounded by a liquid having a dielectric strength greater than the dielectric strength of air to effect immersion of the base pins of the cathode ray tube in the liquid and contact thereof with the contact members of the container and indexing the cathode ray tube and a second container containing contact members connected in common to circuit ground to effect arcing to all of the cathode ray tube electrodes in common.

Apparatus for high voltage conditioning cathode ray tubes

A base for a cathode ray tube includes a rubber washer having apertures of a size to fix over the glass nubbins surrounding the bottom of the tube pins where they exit from the neck of the tube. The base also includes a walled rim which contains the washer.

Cathode ray tube base

An improvement combination is provided in cathode ray tube construction for expediting improved tube processing and subsequent tube operation. The combination is incorporated in the funnel portion of the tube wherein a first low resistive electrical conductive coating is interiorly disposed in a substantially circumferential manner on the forward portion of the funnel nearest the screen. A high resistive electrical conductive coating is substantially circumferentially interiorly disposed on substantially the intermediate portion of the funnel being contiguous with the first coating, and making contact with a second low resistive electrical conductive coating interiorly disposed on substantially the rear portion of the funnel. This second coating extends into the forward region of the integral neck portion to facilitate electrical connection with the electron gun assembly positioned therein. A first button connector is oriented to traverse the wall of the forward region of the funnel and make connection with the first low resistive coating. Rearward from the first button, a second button connector traverses the wall of the funnel to provide a separate electrical connection for the second low resistive coating. During tube processing, utilization of this second button facilitates high voltage conditioning of the electron gun assembly by by-passing the high resistance coating; while in subsequent tube operation only the first button connector is utilized thereby effecting beneficial arc protection by incorporating the high resistive coating into the circuit.

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Seneca Falls, NY, United States of America

Ralph E Neuber