DEFLECTION COIL ASSEMBLY

• US 3,665,597 A
• Filed: 09/25/1970
• Issued: 05/30/1972
• Est. Priority Date: 10/03/1969
• Status: Expired due to Term

• Current Assignee: Mathijs Willem Bartels, Sing Liong Tan, Walter Wilhelmus Johannus Degger
• Original Assignee: Mathijs Willem Bartels, Sing Liong Tan, Walter Wilhelmus Johannus Degger
• Inventors: Tan, Sing Liong, Bartels, Mathijs Willem, Degger, Walter Wilhelmus Johannus
• Primary Examiner(s): Harris, George
• Application Number:
  US05/075,372
• Time in Patent Office: 613 Days
• Field of Search: 335/210,213,299 313/75,76 336/206 29/605
• US Class Current: 29/605
• CPC Class Codes: H01J 2229/7031 Cores for field producing elements, e.g. ferrite
• CPC Class Codes: H01J 29/762 using saddle coils or printed windings coils per se H01F
• CPC Class Codes: Y10T 29/49071 by winding or coiling

Abstract

Deflection coil pair for the color camera wound from insulated metal foil to a rectangular or trapezoidal block, which after baking is bored at right angles to the winding axis and machined to the desired tubular or hollow conical shape.

Claims

1. A method of fabricating a coil assembly composed of two electrically separated coils from a conductive strip of metal foil having a layer of insulating material on one surface thereof which comprises, spirally winding said foil strip about a core shaped so as to form a tubular coil body which, in cross-section, comprises four sides, two opposed sides of which are parallel and the other two opposed sides of which are substantially equal in length and longer than the two parallel sides, baking said coil body, cutting two parallel opposed grooves in the outer surface of the coil body along an axis orthogonal to the long axis of the tubular coil body and parallel to the longitudinal axis of symmetry of the four sided figure in cross-section, machining said coil body so as to form another tubular body of generally cylindrical or conical configuration with its major axis parallel to said longitudinal axis of symmetry, and filling said grooves with a synthetic resin material.

2. The method of claim 1 wherein said machining step includes the step of boring an aperture in said coil body parallel to said longitudinal axis of symmetry.

3. The method of claim 1 wherein said core has a rectangular cross-section thereby to form an apertured coil body with a rectangular cross-section having said longitudinal axis of symmetry, said machining step thereby deriving a coil assembly comprising two coils each having rectangular windings.

4. The method of claim 1 wherein said core has a trapezoidal cross-section thereby to form an apertured coil body with a trapezoidal cross-section having said longitudinal axis of symmetry, said machining step thereby deriving a coil assembly comprising two coils each having trapezoidal windings.