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:
Apr. 11, 1995
Filed:
Nov. 02, 1992
Applicant:
Inventor:
Wan-Jae Son, Kyungki-Do, KR;
Assignee:
Samsung Electron Devices Co., Ltd., Kyungki-Do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313414 ; 313417 ; 313456 ;
Abstract
An electrode for electro gun of a cathode ray tube includes an external electrode member formed on the top of a cup-shaped body and having a large-diameter electron beam passing hole through which three electron beams pass commonly, and an internal electrode member inserted into the external electrode member and having three separate electron beam passing holes on the top of the internal electrode, wherein protrusions are formed on the outer surface of the internal electrode member, thereby enhancing the assembly precision of the external and internal electrode members.