Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2006-08-03
2009-12-29
Benson, Walter (Department: 2837)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S323030, C310S323040, C310S323060
Reexamination Certificate
active
07638926
ABSTRACT:
A piezoelectric ultrasonic motor includes a piezoelectric stator including a metal tube with an inner space and piezoelectric elements mounted on the outer circumference of the metal tube, a rotary shaft including a rotation bar inserted into the inner space of the metal tube, and a rotation member provided around the rotation bar in contact with the piezoelectric stator. The piezoelectric stator strains with an electric field applied thereto, and the rotation member rotates in response to the strain of the piezoelectric stator. A power transmission member is provided at one portion of the rotation bar to transmit the rotation of the rotation member to an object to be transported. With face contact the motor achieves stable actuation together with enhanced force and sufficient strain, and a flexibility to be applied to various apparatuses such as a camera module.
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Korean Patent Office Action, mailed Sep. 29, 2006, and issued in corresponding Korean Patent Application No. 10-2005-0071758.
Japanese Office Action issued on Oct. 7, 2008 in corresponding Japanese Patent Application No. 2006-213768.
Kang Byung Woo
Koc Burhanettin
Lee Dong Kyun
On Sang Min
Ryu Jung Ho
Benson Walter
Rosenau Derek J
Samsung Electro-Mechanics Co. Ltd.
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