Vibration actuator

Details Vibration actuator Vibration actuator

2007-02-14

2009-12-29

Benson, Walter (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S323120, C310S323130, C310S323160

Reexamination Certificate

active

07638927

ABSTRACT:
Provided is a vibration actuator in which a plurality of rotors can be driven by a single vibration unit.Two rotors (A) and (B) are attracted toward corresponding stators to be contacted with and pressurized against the corresponding stators (3) and (4), respectively, through a tension of a wire member (8). A composite vibration combining a plurality of vibrations is generated by a composite vibrator (2) to cause elliptical movements in corner portions of the stators (3) and (4). As a result, the two rotors (A) and (B) abutting onto and pressurized against the two stators (3) and (4) are rotated about rotation centers (C1) and (C2) thereof, respectively, at the same time.

REFERENCES:
patent: 6497201 (2002-12-01), Werson
patent: 2004/0212278 (2004-10-01), Miyazawa
patent: 5-38170 (1993-02-01), None
patent: 11-220892 (1999-08-01), None
patent: 2006-5975 (2006-01-01), None
International Search Report of corresponding International Application No. PCT/JP2007/052607, mailed May 15, 2007.

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