EP 0500312 A1 19920826 - Shadow mask assembly for color cathode ray tube.
Title (en)
Shadow mask assembly for color cathode ray tube.
Title (de)
Schattenmaskenanordnung für Farbkathodenstrahlröhren.
Title (fr)
Assemblage de masque d'ombre pour tube à rayons cathodiques en coleurs.
Publication
Application
Priority
JP 2250191 A 19910218
Abstract (en)
A shadow mask assembly for a color cathode ray tube has a shadow mask (5), a frame (6) and a plurality of bimetallic spring members (7). The shadow mask is supported by the frame and is disposed behind an inner surface of a glass panel with a predetermined space being provided with respect to the inner surface. Each of the bimetallic spring members has a high expansion metal (1) and a low expansion metal (2) bonded together and supports the frame to the glass panel. The effective length of the low expansion metal of the bimetallic spring member is shorter than the spring working effective length (LS) of the bimetallic spring member. The correction working effective length (LC) and the spring working effective length (LS) are functionally independent from each other, so that the correction working is not influenced by location of the welding points which are otherwise required to be disposed at precise locations. <IMAGE>
IPC 1-7
IPC 8 full level
H01J 29/02 (2006.01); H01J 29/07 (2006.01); H01J 31/20 (2006.01)
CPC (source: EP KR)
H01J 29/07 (2013.01 - KR); H01J 29/073 (2013.01 - EP)
Citation (search report)
- [X] JP S62268040 A 19871120 - MATSUSHITA ELECTRONICS CORP
- [A] US 4491763 A 19850101 - FUJINUMA MAKOTO [JP], et al
- [A] US 4792719 A 19881220 - ORNSTEIN JACOB L [US]
Designated contracting state (EPC)
DE GB NL
DOCDB simple family (publication)
EP 0500312 A1 19920826; JP H04262342 A 19920917; KR 920017159 A 19920926
DOCDB simple family (application)
EP 92301308 A 19920218; JP 2250191 A 19910218; KR 920002362 A 19920218