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:
Feb. 23, 1993
Filed:
Apr. 05, 1991
Lawrence W Dougherty, Sleepy Hollow, IL (US);
Zenith Electronics Corporation, Glenview, IL (US);
Abstract
A CRT bulb that has been preloaded to counter the atmospheric load placed on the seal area of an evacuated and sealed CRT is disclosed along with methods of constructing the bulb. The front panel is simply supported on the funnel and deflected inwardly during affixation of the panel to the funnel to form the bulb. When the deflection load is removed from the affixed panel, the resultant strain energy imparted to the bulb seal area offsets at least some of the atmosphericly induced strain on the sealed CRT. The bulb has a more evenly balanced stress distribution between the front panel and the funnel seal area than previous flat panel CRTs, enabling the use of thinner front panels and seal land.