The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 08, 1990
Filed:
Jun. 06, 1989
Raymond G Capek, Elmhurst, IL (US);
David B Danielson, Elk Grove, IL (US);
Zenith Electronics Corporation, Glenview, IL (US);
Abstract
A process is disclosed for use in the manufacture of a color cathode ray tube having a flat faceplate and tensed foil shadow mask. The process comprises providing a trough-like shadow mask support structure for receiving and securing the mask and filling the structure with a devitrifying solder glass paste of relatively low viscosity. The structure is then over-filled with devitrifying solder glass paste of relatively high viscosity. The structure is joined with the faceplate with the plate of relatively high viscosity in contact with the faceplate. The faceplate and the structure is heated to a temperature effective to shrink the solder glass paste into the structure and devitrify the paste to permanently secure the structure to the faceplate.