Actuator

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United States of America Patent

PATENT NO 9082959
APP PUB NO 20120228994A1
SERIAL NO

13505676

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An exemplary actuator in the form of a plate is disclosed, which includes, at least two generators for exciting an acoustic standing wave in the actuator. The actuator can have at least two main surfaces and a plane of symmetry S running perpendicularly to the main surfaces, with respect to which the generators are arranged symmetrically. A first lateral surface area can have a length L that substantially corresponds to the wavelength of the acoustic standing wave excited in the actuator. A second lateral surface area of the actuator can have a length (B) that is greater than the wavelength of the acoustic standing wave excited in the actuator, and that is not equal to a multiple of half the wavelength of the excited acoustic standing wave.

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Patent Owner(s)

Patent OwnerAddress
PHYSIK INSTRUMENTE (PI) GMBH & CO KG76228 KARLSRUHE

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Wischnewskij, Alexej Wörth, DE 12 78
Wischnewskiy, Wladimir Waldbronn, DE 22 262

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