Patent ID: 6031441
Filing Date: 2000-02-29
Classification: H01F,Y10T

Abstract:
A ballast stabilizer fabrication method comprising the steps of:A. preparing a winding holder having a center open chamber and a winding groove around the periphery and then winding an enabled wire around the wire groove of said winding holder;B. putting a stack of I-shaped silicon steel plates having a bottom locating groove in the center open chamber of said winding holder;C. putting the assembly of said winding holder and said stack of I-shaped silicon steel plates in a perforated casing having beveled peripheral guide edge at one end;D. preparing a stack of annular silicon steel plates having a center through hole and an inside flange inside the center through hole and then inserting the beveled peripheral guide edge of said perforated casing into the center through hole of said stack of annular silicon steel plates;E. forcing said perforated casing into the inside of the center through hole of said stack of annular silicon steel plates, causing the locating groove of said stack of I-shaped silicon steel plates to be forced into engagement with the inside flange of said stack of annular silicon steel plates and permitting a top side of said stack of I-shaped silicon steel plates to be isolated from an inside wall of said stack of annular silicon steel plates;F. dipping the assembly of said stack of annular silicon steel plates said perforated casing, said winding holder and said stack of I-shaped silicon steel plates in varnish;G. picking up the assembly of said stack of annular silicon steel plates, said perforated casing, said winding holder and said stack of I-shaped silicon steel plates from varnish, and then drying the assembly into a finished ballast stabilizer.