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:
Mar. 16, 2004
Filed:
Sep. 24, 2002
Yoichi Ito, Kawasaki, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A color cathode ray tube includes a shadow mask structure composed of a frame, a shadow mask attached to the frame and suspension springs attached to the frame, and studs embedded in a skirt portion of its panel portion. Each suspension spring is composed of a base member including a portion attached to the frame, a sloped portion extending from the portion toward the skirt portion, and a first joint portion extending axially from the sloped portion; and a spring member including a second joint portion fixed to the first joint portion, a resilient portion extending at an angle &thgr; from the second joint portion, and a stud-engaging portion extending from the resilient portion and formed with a hole engaged with one of the studs, where 0°≦&thgr;≦10°. A length L of the resilient portion satisfies 20 mm≦L≦an axial length of the frame.