Kouji Kosaka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: In a feed drive apparatus wherein a moving element 27 is driven by drive legs 21, 22 having extension/contraction deforming parts 23 and shear deforming parts 24, sine wave drive voltages are respectively applied to the extension/contraction deforming parts 23 and shear deforming parts 24 of the drive legs 21, 22 in order to permit high speed operation, and make the average voltage effectively zero.
Type:
Grant
Filed:
June 28, 2002
Date of Patent:
January 3, 2006
Assignees:
Japan Science & Technology Agency, Kumamoto Technology Incorporated
Abstract: In a feed drive apparatus wherein a moving element 27 is driven by drive legs 21, 22 having extension/contraction deforming parts 23 and shear deforming parts 24, sine wave drive voltages are respectively applied to the extension/contraction deforming parts 23 and shear deforming parts 24 of the drive legs 21, 22 in order to permit high speed operation, and make the average voltage effectively zero.
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