Driver using electromechanical energy transducer

Details Driver using electromechanical energy transducer Driver using electromechanical energy transducer

2005-08-04

2009-06-09

SanMartin, Jaydi (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

Reexamination Certificate

active

07545086

ABSTRACT:
A driver includes an electromechanical energy transducer deformed by applying and removing voltage, a supporting member having the electromechanical energy transducer joined thereto for transmitting movement of the electromechanical energy transducer resulting from the deformation to the supporting member, and a movable body disposed in an inner peripheral portion of the supporting member. A deformation speed of the electromechanical energy transducer when a state change occurs from a prior-to-deformation state of the electromechanical energy transducer to an after-deformation state of the electromechanical energy transducer differs from a deformation speed of the electromechanical energy transducer when state change occurs from the after-deformation state to the prior-to-the deformation state. When the electromechanical energy transducer is deformed at the lower of the deformation speeds, frictional force generated between the movable body and the inner peripheral portion moves the movable body and the supporting member.

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Japanese Unexamined Patent Application Publication No. 7-308083.

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