 Image Number 5 for United States Patent #5352949.
A first ball lace and a second ball lace, which is arranged at a position opposite to the first ball lace to sandwich a ball between itself and the first ball lace are coaxially assembled in a pencil shaped vibration driven motor or actuator, so that the second ball lace can be operated externally, and the rotational force of the ball can be output to an external device.
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