Power tools with motor having a multi-piece stator

A power tool has a motor having a stator made by separately forming pole pieces, return path pieces and field coils. The field coils are placed over necks of the pole path pieces and the return path pieces are affixed to the pole pieces. An armature having an outside diameter of at least 0.625 the o...

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Main Authors Du, Hung T, Ortt, Earl M, Verbrugge, Brandon L, McCormick, Garrett P, Zemlock, Michael A, Hogan, Kevin M, Zhang, Jiaqi, Wang, Ren Hong, Mannarino, Frank A, Maid, Spencer G, Moll, Shane Ashley, Benton, James C
Format Patent
LanguageEnglish
Published 22.02.2011
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Summary:A power tool has a motor having a stator made by separately forming pole pieces, return path pieces and field coils. The field coils are placed over necks of the pole path pieces and the return path pieces are affixed to the pole pieces. An armature having an outside diameter of at least 0.625 the outside diameter of the stator is placed in the stator. The field coils may be formed so that they extend beyond pole tips of the pole pieces.