Method of making a two piece stator with magnetic bobbin

Metal working – Method of mechanical manufacture – Electrical device making

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Details

296021, 2395851, 25112915, 336208, H01F 4102

Patent

active

055332498

ABSTRACT:
A method of making a solenoid coil assembly comprises the steps of providing a bobbin made of an insulated magnetic material. A pair of electrical terminals is mounted on the bobbin for connection with a separable electrical connector. A two-piece stator assembly is comprised of an inner pole disposed on the interior of the bobbin and an outer pole disposed on the exterior of the bobbin. The bobbin is then molded over the inner pole core. The insulated magnetic material of the bobbin comprises a plurality of magnetic granules, each of the plurality of magnetic granules being coated with a layer of insulating material, thereby preventing an electrical path from granule to granule.

REFERENCES:
patent: 5289627 (1994-03-01), Cerny et al.
patent: 5428883 (1995-07-01), Stieglitz

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