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. 22, 2000
Filed:
Sep. 16, 1996
Hiroshi Miyazawa, Hitachi, JP;
Makoto Koizumi, Nako-machi, JP;
Mutsumi Maehara, Mobara, JP;
Hidetoshi Kida, Mobara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An in-line type color Braun tube includes a shield cup electrode which opens at the side facing a fluorescent surface of the tube, provided at the end of an electron gun, wherein the shield cup electrode comprises a cylindrical side wall for shielding three electron beams generated by the electron gun from influences of electrostatic charge accumulated at a wall surface of a glass bulb of the tube, a base plate having three beam passing holes aligned in the horizontal direction, and two cylinders made of non-magnetic and conductive material, for suppressing eddy current induced at the shield cup electrode, each of the two cylinders surrounding one of two paths of electron beams passing through both side holes of the three beam passing holes, projecting from a surface facing the fluorescent surface, of the base, in the direction facing the fluorescent surface.