Patent ID: 11876407
Assignee: LENOVO (SINGAPORE) PTE. LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 19:
20. A method comprising:
in an assembly that comprises a rotor that defines a rotor axis and that comprises a number of permanent magnets, a stator that defines a stator axis, coaxially aligned with the rotor axis, and that comprises a number of electropermanent magnets, wherein the number of permanent magnets, that are not electropermanent magnets, exceeds the number of electropermanent magnets, a controller that controls polarity of the electropermanent magnets to rotate the rotor about the rotor axis, and a hinge assembly that comprises an additional number of permanent magnets that reduce a rotational torque requirement of the hinge assembly, wherein rotation of the rotor about the rotor axis causes rotation of a component of the hinge assembly, issuing a control signal to control polarity of the electropermanent magnets to rotate the rotor.