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:
Jan. 23, 1990
Filed:
Nov. 12, 1987
Applicant:
Inventor:
Claude Pons, Rome, IT;
Assignee:
Videocolor, Montrouge, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313428 ; 313431 ; 313440 ; 335210 ;
Abstract
A method is disclosed for the setting of the static convergence and/or purity of a color television tube using permanent magnets. Magnetizable elements are fixed around the color television tube. These elements are evenly distributed around the axis of the tube. To correct the static convergence and/or purity errors, each element is magnetized by means of a corresponding coil, the position and dimensions of which are such that the element is subjected solely to the field within the turns of the coil.