Patent ID: 6877214
Filing Date: 2005-04-12
Classification: H01F,H02K,Y10T

Abstract:
1. A method of manufacturing a stack of laminations, said method comprising: providing sheet stock material; stamping a plurality of laminations in said stock material, forming a plurality of interlock features in said plurality of laminations and separating each of said plurality of laminations from said stock material, each of said laminations having a first substantially planar surface and an oppositely disposed second substantially planar surface; stacking and spacing said plurality of laminations to define a first stack shape wherein each of said first and second surfaces of each of said laminations are oriented substantially parallel and define a linear axis oriented substantially perpendicular to each of said first and second surfaces and a first one and a second one of said plurality of laminations positioned wherein said first surface of said first lamination faces said second surface of said second lamination and said facing first and second surfaces define a spacing volume therebetween having a substantially uniform thickness; interlocking each of said plurality of laminations with an adjacent one of said plurality of laminations with said plurality of laminations disposed in said first stack shape wherein at least one of said plurality of interlock features is partially disposed within one of said spacing volumes; and repositioning said plurality of laminations into a second stack shape after said stacking and interlocking steps whereby said first surface of said first lamination is repositioned relative to said second surface of said second lamination so that said spacing volume assumes a non-uniform thickness and at least one of said plurality of laminations is disposed at a non-parallel orientation to another one of said plurality of laminations.