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:
Oct. 22, 1996
Filed:
Feb. 15, 1995
Applicant:
Inventors:
Frank R Ragland, Jr, Lancaster, PA (US);
Stephen T Opresko, Lancaster, PA (US);
Assignee:
Thomson Consumer Electronics, Inc., Indianapolis, IN (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
3134 / ; 445 22 ;
Abstract
The present invention provides an improvement in a color picture tube. The tube includes an envelope comprising a faceplate panel, a funnel and a neck. The faceplate panel includes a transparent rectangular faceplate having a cathodoluminescent screen on an interior surface thereof, and a peripheral sidewall. The improvement comprises the faceplate panel having either an interior or exterior blend radius from the faceplate to the sidewall that varies around the periphery of the panel in such a manner that the stresses in predetermined areas of the panel are reduced.