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:
Oct. 31, 2006
Filed:
Jul. 27, 2004
Etsuji Tagami, Takatsuki, JP;
Etsuji Tagami, Takatsuki, JP;
Matsushita Toshiba Picture Display Co., Ltd., Osaka, JP;
Abstract
A ferrite core constituting a deflection yoke includes a plurality of convex portions in a ridge shape on an inner surface thereof. Among the plurality of convex portions, assuming that the convex portions in a range excluding a range of −20° to +20° with respect to a horizontal axis and a range of −20° to +20° with respect to a vertical axis are diagonal convex portions, the lengths in a tube axis direction of at least horizontal axial convex portions on a horizontal axis or vertical axial convex portions on a vertical axis are larger than those of the diagonal convex portions. Because of this, a color picture tube apparatus with a deflection power reduced can be provided while the degree of freedom in a winding arrangement of deflection coils is secured.