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:
Aug. 21, 1990
Filed:
Apr. 14, 1989
James R Fendley, Arlington Heights, IL (US);
Janice L Wichmann, Park Ridge, IL (US);
Zenith Electronics Corporation, Glenview, IL (US);
Abstract
A front assembly for a color cathode ray tube is disclosed. The tube includes a faceplate having on its inner surface a centrally disposed phosphor screen embraced by a peripheral sealing area adapted to mate with a funnel. A faceplate-mounted frame-like shadow mask support structure secured to the inner surface of the faceplate between the sealing area and the screen has a mask-receiving surface for receiving and supporting a foil shadow mask and holding the mask in tension by laser weldments. The weldments according to the invention are spaced close enough to hold the mask in tension without distortion, yet spaced widely enough to provide for relatively rapid welding and strong, independent welds.