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. 09, 1996
Filed:
Sep. 29, 1994
Akira Shoda, Gunma, JP;
Yoshio Suzuki, Fukaya, JP;
Shoichi Yokoyama, Hanyu, JP;
Osamu Takahashi, Fukaya, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A shadow mask of a color cathode ray tube includes a mask body having a rectangular effective area with a large number of electron beam apertures, a non-effective area surrounding the effective area, and a skirt portion extending from a peripheral portion of the non-effective area. The mask body has a belt-shaped reinforcing bead extending between two end edges of the mask body, which are in parallel to the vertical axis, through a central portion of the mask body and projecting from the effective area toward a phosphor screen. The reinforcing bead is formed such that a projecting height thereof is gradually decreased from the central portion of the mask body toward the two end edges of the mask body and such that the projecting height thereof at boundaries between the effective and non-effective areas becomes about not more than 2/3 the height of the reinforcing bead at the central portion of the mask body.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile