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:
May. 25, 1999
Filed:
Jul. 09, 1997
Applicant:
Inventors:
Richard M Gorski, Arlington Heights, IL (US);
Kenneth A Guzowski, Hoffman Estates, IL (US);
Assignee:
Zenith Electronics Corporation, Glenview, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
315 15 ; 3153821 ; 313449 ;
Abstract
A Uni-Bipotential in-line electron gun for a color cathode ray tube includes a specially shaped G4 electrode for compensating the gun for comatic distortion. In the G4 electrodes the three apertures are oblong in shape, with the two outer apertures being horizontally displaced from the beam axis to inwardly displace the electron beams so that they substantially fall on the respective optical axes of symmetry of the main lens.