| 摘要 |
of the disclosure An electric motor is disclosed having clutch means which is formed of a magnetic material. When winding means wound on a core of the motor is energized, the core is electrically magnetized and attracts the clutch means for electromagnetic coupling so that the core and the clutch means may be rotated in the combined condition to operate a driven member drivingly connected with the clutch means. Upon deenergization of the winding means, the clutch means may be rotated separately from the core to permit movement of the driven member by easy manual operation independent of the core. |
