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:
Dec. 06, 1988
Filed:
Mar. 24, 1987
Hans Meershoek, Eindhoven, NL;
U.S. Philips Corp., New York, NY (US);
Abstract
A cathode ray tube deflection unit comprising a field coil system with two diametrically opposite field deflection coils and a line coil system with two diametrically opposite line deflection coils. Each coil has a front end segment (15, 18), a rear-end segment (16, 19) and conductors (17, 20) extending between such segments. In order to prevent rotation of the horizontal lines of the raster on the CRT display screen with respect to the horizontal axis, which rotation is caused by tolerance errors in alignment of the two coil systems, a pair of plate-shaped parts (21, 21') of soft magnetic material are arranged respectively extending across the front end segment (15, 15') of the respective line deflection coils (11, 11') in positions coinciding with diametrically opposite vertices of a rectangle whose diagnonals intersect substantially on the longitudinal axis of the deflection unit, and at which positions a portion of the front end segment of a line deflection coil overlaps a portion of the front end segment of a field deflection coil.