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:
Jan. 16, 1979
Filed:
Feb. 28, 1977
Melvin F Rogers, Western Springs, IL (US);
Zenith Radio Corporation, Glenview, IL (US);
Abstract
This disclosure depicts an implosion-protected, rectangular-type color cathode ray tube bulb comprising a rectangular glass faceplate of the type having a viewing window and a flange extending rearwardly therefrom, to which flange is sealed a mating funnel. The bulb has a tension band system very tightly constricting said flange so as to provide implosion protection for the bulb by compressively pre-loading the corners of the faceplate flange. The bulb is characterized by having on the outside of the faceplate flange at each corner and molded integrally with the flange, an incompressible load-concentrating boss for significantly reducing the corner area on which the load is applied by the tension band. By this expedient, the level of the compressive stresses generated in the flange at the flange corners and the resultant implosion protection provided by the tension band system is greatly enhanced.