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:
Apr. 12, 1988
Filed:
May. 21, 1986
Leonard Dietch, Skokie, IL (US);
James R Fendley, Arlington Heights, IL (US);
Paul Strauss, Chicago, IL (US);
John Jarosz, Skokie, IL (US);
Zenith Electronics Corporation, Glenview, IL (US);
Abstract
A front assembly for a color cathode ray tube includes a faceplate having a peripheral sealing area adapted to mate with a funnel, with a centrally disposed phosphor screen. The assembly according to the invention includes a separate shadow mask support structure composed of ceramic material secured to the faceplate inner surface on opposed sides of the screen and within the sealing area for receiving and supporting a foil shadow mask in tension a predetermined distance from the screen. Other configurative aspects include a separate continuous or discontinuous metal cap or strip secured to the support structure for receiving and securing a mask, and a mask support structure comprising four discrete rails composed of ceramic with weldable metal strip means for interconnecting the rails to form a generally rectangular unitary shadow mask support structure. The ceramic may also serve as a 'buffer' for compensating for the difference in thermal coefficients of the glass of the faceplate and the metal of the cap or strip.