Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1993-10-04
1995-09-26
Bryant, David P.
Metal working
Method of mechanical manufacture
Assembling or joining
29DIG95, 156220, 264293, 428900, 40600, 40616, B21D 3900
Patent
active
054525080
ABSTRACT:
A method for manufacturing three-dimensional surface figures on a soft magnetic material. An insulating layer is first laid on a soft magnetic material layer and a foam intermediate layer is then laid on the insulating layer. A face layer previously printed with figures is finally laid on the intermediate layer. Thereafter the face layer is embossed and molded with concave/convex three-dimensional figures corresponding to the present embossing stripes of a molding device by a high frequency device so as to provide an improvement over conventional three-dimensional figures made by injection molding which cannot have figures printed by halftone block printing or color separation so as to eliminate the shortcomings existing in planar printed magnetic products which are only printed with planar figures.
REFERENCES:
patent: 2599047 (1952-06-01), Clark
patent: 3756888 (1973-09-01), Kuroda
patent: 3839130 (1974-10-01), Dean et al.
patent: 3908065 (1975-09-01), Stigen
patent: 3978258 (1976-08-01), Faust et al.
patent: 4310978 (1982-01-01), Stern
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