IMPROVEMENTS TO A METHOD FOR MANUFACTURING CATHODIC RAY TUBES '.,' The present invention relates to improvements to a method of manufacturing cathode ray tubes comprising of a housing and mounting assembly including at least one cathode and heater for the same sealed in the envelope; and the method includes the steps of baking the shell and mounting kit at approximately 300 ° C to 450 ° C and simultaneously discharging gases from the shell before sealing the shell; characterized in that, during the simultaneous stages of baking and unloading,Radio-frequency energy is applied to the mounting assembly and electric current is applied through the heater in sequential applications and then in simultaneous applications.

摘要

A method for making a cathode-ray tube including baking the envelope and mount assembly and simultaneously exhausting gases from the envelope, and then sealing (tipping off) the exhausted envelope. During the baking and exhausting of the tube, the following steps are carried out first sequentially and then simultaneously: (a) applying radio-frequency energy to the mount assembly and (b) passing electric current through the cathode heater.