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:
Jun. 22, 1999
Filed:
May. 20, 1997
Nobuyuki Tai, Himeji, JP;
Shinji Ohama, Elmira, NY (US);
Shuuji Makimoto, Fukaya, JP;
Kouichi Soneda, Kumagaya, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A shadow mask opposed to a phosphor screen of a panel has a rectangular mask body and a rectangular mask frame fixed to the periphery of the mask body. The mask body has a pair of long side edges and a pair of short side edges, and the long side edges are respectively welded to long side walls of the mask frame while the short side edges are respectively welded to short side walls of the mask frame. The long and short side walls of the mask frame are respectively supported on the panel by mask holders. Each mask holder has a fixed portion welded to the mask frame and an engaging portion engaged with a stud pin of the panel. Welding positions between the long side edges of the mask body and the long side walls of the mask frame are shifted from the short axis, and welding positions between the short side edges of the mask body and the short side walls of the mask frame are shifted from the long axis.