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US 5,165,614 AGranted
Winding method for the non-radial winding of a cathode tube deflector and a deflector made thereby
AssigneeVideocolor
InventorJean-Pierre Fourche
Life of this patent
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Abstract
To avoid the use of adhesives or notched parts when winding the non-radial layers of a cathode tube deflector, first a radial layer with a wide pitch is wound. This first radial layer then presents notches for winding the folllowing layers of the non-radial coil.
Claims2
A winding method for the non-radial winding of wires to form a coil for a cathode tube deflector wherein said cathode tube deflector has at least a first half-core, wherein said at least first half-core has a center of radius, said method comprising the steps of:
- winding a first layer of said coil which is substantially radial to said center, at a pitch which is greater in the middle of said first layer than at the ends of said layer;
- and
- winding a non-radial second layer on said first layer, wherein at least a portion of said wires in said first layer prevent said second layer from slipping.
A deflector for a cathode ray tube comprising:
- a toroidal winding wound on a core, said winding having a substantially radially wound first layer on said core, and a second layer wound on said first layer, said second layer being non-radial,
- said first layer having a pitch which is greater in the middle of said layer than at the ends of said layer.
Dependencies are inferred from the claim text.