Television deflection coil unit
AssigneeU.S. Philips Corporation
InventorsPeter H. J. Corbeij, Tjitte Talsma
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Abstract
A deflection coil unit for color television display tubes in which the narrow end of a flared deflection yoke is mounted in a ball joint, adjusting means being provided at the widest end of the yoke for tilting the deflection yoke about a horizontal and a vertical axis through the ball joint. Thus, the convergence on the vertical and horizontal axis of the display screen can be adjusted. For the adjustment of the color purity, the ball joint is mounted such that it is axially displaceable in a housing.
Claims3
A deflection coil unit for a television display tube, said unit comprising a housing, a flared deflection yoke which is located within said housing, which housing is adapted to be secured to a display tube when the unit is mounted thereon, said yoke being capable of being displaced along its longitudinal axis which is adapted to substantially coincide with the longitudinal axis of a display tube, a ball joint means for mounting said yoke at its narrow end comprising first and second members each having a part spherical surface which cooperate to allow pivotal movement of said yoke about a plurality of axes, said first member being secured to said yoke, said second member being capable of being secured to said housing, and separate adjusting means for independently tilting said yoke about two mutually perpendicular transverse axes which extend perpendicular to the longitudinal axis of said yoke and which are situated at or adjacent the said narrow end of said yoke.
Dependencies are inferred from the claim text.