Driving device capable of transferring vibrations generated...

Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices

Reexamination Certificate

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C310S012060

Reexamination Certificate

active

07633208

ABSTRACT:
A driving device includes an electro-mechanical transducer having first and second end portions opposite to each other in an expansion/contraction direction, a stationary member coupled to the first end portion of the electro-mechanical transducer, a vibration friction portion coupled to the second end portion of the electro-mechanical transducer, and a rod-shaped moving portion frictionally coupled to the vibration friction portion, whereby moving the moving portion in the expansion/contraction direction of the electro-mechanical transducer. The vibration friction portion is made of a material having a vibration transfer rate of 4900 meters/second or more. The moving portion is made of a material which has a vibration transfer rate of 4900 meters/second or more and which is different from that of the vibration friction portion.

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U.S. Appl. No. 12/082,939, filed Apr. 15, 2008, Entitled “Driving Device Capable of Obtaining a Stable Frequency Characteristic” Inventor: Takahashi et al.
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Extended European Search Report dated Sep. 9, 2008 issued in European Application No. 08154985.9-2213 (which is a counterpart of related U.S. Appl. No. 12/148,793).
Extended European Search Report dated Sep. 1, 2009 (8 pages), issued in counterpart European Application Serial No. 08154734.1.

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