摘要 |
<p>A rotation device (901) comprises: (a) a rotor shaft with a rotor; (b) a stator; (c) an electric motor (903) integrated with the device (902) and comprising a motor stator and a motor rotor, which motor rotor is coupled via the rotor shaft (906) of the rotation device (902) to the rotor (910) of the rotation device.</p> |