Leydig, Voit, Osann, Mayer & Holt, Ltd.
Stator of uni-directional self starting synchronous motor
 A stator of uni-directional self starting synchronous motor of which magnetic pole teeth formed flatly integral with a yoke for opposing a flat disk shape rotor having axial rotary shaft. The yoke is of an elongated plate having adjacent an end the pole teeth comprising radially alternately extending inner and outer teeth formed as punched and joined through a connecting part, the plate is bent into a substantially U shape in section, a core of a magnetic material having an axial hole for passing therethrough the shaft of rotor is disposed between opposing both end parts of the yoke coaxially with the teeth to provide main magnetic path, and a coil wound on a bobbin is disposed around the core. 
Matsushita Electric Works, Ltd.
H H
H02K H02K
inventional inventional
Yasuo Tosihisa
Suzuki Hirai