| 摘要 |
1. Direct current electrical machine provided with a cylindrical air gap and presenting a permanent excitation obtained by means of magnetized platelets, the stator of said machine being formed by stacked sheets, characterized in that said magnetized platelets (A) are housed in slots (1, 2) with a closed polygonal outline managed in said stacked sheets (T), said polygonal outline extending up to the immediate vicinity of at least one of both ends of the effective zone (4) of the pole (P) forming the air gap, whereby only a very narrow isthmus of sheets (3) remains at this place. |
