Method for making search coil assembly for metal detectors

Details Method for making search coil assembly for metal detectors Method for making search coil assembly for metal detectors

1987-06-01

1989-05-30

Echols, P. W.

Metal working

Method of mechanical manufacture

Electrical device making

336 84C, 336 96, 26427219, 264 465, H01F 706

Patent

active

048337730

ABSTRACT:
A coil assembly for a metal detector and a method for making the coil assemblies for metal detectors of the type used for detecting metal fragments in foodstuffs and pharmaceuticals, the method comprising providing a frame of non-metallic material, the frame have an aperture therethrough for the passage of material undergoing inspection, winding coils of electrically conductive strands on the frame, applying plastic in liquid form to the frame and coils, less the aperture portion of the frame, and applying metal in fluid form to the plastic to encase the plastic in a metal layer.

REFERENCES:
patent: 2237254 (1941-04-01), Broekhuysen
patent: 3213173 (1965-10-01), Cobb
patent: 3278455 (1966-10-01), Feather
patent: 3361962 (1968-01-01), Albrecht
patent: 3368175 (1968-02-01), Giegerich et al.

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