Ultrasonic motor

Details Ultrasonic motor Ultrasonic motor

2006-03-03

2008-08-26

Schuberg, Darren (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S344000, C310S348000

Reexamination Certificate

active

07417357

ABSTRACT:
An ultrasonic motor includes a rotor (70) and a piezoelectric driving unit (50) for driving the rotor to rotate. The driving unit includes a piezoelectric film (52) and a vibration film (54) contacting with the rotor at an outer-periphery thereof. The ultrasonic motor further includes covers (56, 58) having a plurality of poles (560, 580) extending therefrom. Free ends of the poles fixedly connect with top and bottom sides of the vibration film, respectively.

REFERENCES:
patent: 6450419 (2002-09-01), Martens et al.
patent: 6489705 (2002-12-01), Ouyang et al.
patent: 6657362 (2003-12-01), Matsuo et al.
patent: 6717331 (2004-04-01), Lan et al.
patent: 6798118 (2004-09-01), Wen
patent: 2004/0080243 (2004-04-01), Osamu
patent: 2005/0082950 (2005-04-01), Zakoji
patent: 2005/0184621 (2005-08-01), Kitahara et al.
patent: 2006/0250048 (2006-11-01), Moteki et al.

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