Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1996-06-10
1998-03-03
Dougherty, Thomas M.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310328, 310333, H02N 200
Patent
active
057239355
ABSTRACT:
A vibration driven motor can be driven with high torque at high rotation, and has a simple structure that can be manufactured easily. The motor may comprise a stator in a cylindrical form, a rotor disposed on the end surface of the stator and a pressing member for pressing the rotor on the stator with pressure, the stator may include a first piezoelectric electro-mechanical converting element for generating torsional vibration around the axis of the stator, a second electro-mechanical converting element for generating longitudinal vibration in the axial direction of the stator, and a pair of substantially semi-cylindrical vibration members, and the first or second piezoelectric element may be one or more plate-like members sandwiched by the vibration members of the stator.
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Ashizawa Takatoshi
Okazaki Mitsuhiro
Sugaya Isao
Takagi Tadao
Tomikawa Yoshiro
Dougherty Thomas M.
Nikon Corporation
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