Driving device capable of reducing height thereof

Details Driving device capable of reducing height thereof Driving device capable of reducing height thereof

2008-04-17

2010-06-08

Dougherty, Thomas M (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S323010

Reexamination Certificate

active

07732982

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 mounted 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. A frictionally coupled portion has a height (a length of the vibration friction portion in a sliding direction in contact with the moving portion) which is not more than 1.15 mm.

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