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:
Dec. 12, 1989
Filed:
Nov. 05, 1987
Applicant:
Inventors:
Fumio Yamazaki, Hirakata, JP;
Toshifumi Nakatani, Moriguchi, JP;
Assignee:
Sushita Electric Industrial Co., Ltd., Kadoma, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313422 ; 313269 ; 313495 ;
Abstract
In an electron beam generation apparatus for a flat cathode ray tube, line cathodes are stretched in an arc shaped form and held by plural cathode position defining members. The cathode position defining members are disposed along the line cathode in a forward convex arc which protrudes most at its center and less towards its respective ends. An electron beam take-out electrode is placed at a in front side of the line cathode and a back electrode is placed at a back side of said line cathode, the electron beam take-out electrode and back electrode also being arc shaped.