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:
May. 07, 1991
Filed:
Jul. 05, 1989
Takeo Kawaguchi, Nagaokakyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Kyoto, JP;
Abstract
A deflection yoke assembly for use on a cathode ray tube including an evacuated envelope, a coil separator mounted exteriorly on the evacuated envelope at a location corresponding to the boundary betweeen the funnel section and the neck section and having a generally conical portion, a radially outwardly flanged front end portion at one end of the conical portion and a radially outwardly flanged rear end portion at the opposite end of the conical portion, a pair of horizontal deflection coils and a pair of vertical deflection coils both wound on the coil separator. The deflection yoke assembly comprises a vertical deflection distortion correcting unit including two electromagnetic coil devices mounted on at least said radially outwardly flanged front end portion of the coil separator in alignment with a vertical axis of the evacuated envelope while spaced 180.degree. circumferentially about the longitudinal axis of the envelope. The electromagnetic devices are adapted to generate magnetic fluxes in a direction substantially perpendicular to the vertical axis when electrically energized in synchronism with the cycle of vertical deflection, exercised by the vertical deflection coils, for minimizing raster distortions.