Surface acoustic wave actuator and deflector employing the same

Details Surface acoustic wave actuator and deflector employing the same Surface acoustic wave actuator and deflector employing the same

2005-09-27

2005-09-27

Budd, Mark (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S31300R

Reexamination Certificate

active

06949868

ABSTRACT:
A surface acoustic wave actuator has a mover arranged on a first surface of a piezoelectric board and comb-shaped electrodes formed on the first surface. High frequencies are applied to the comb-shaped electrodes to generate Rayleigh waves that move the mover. In the surface acoustic wave actuator, the com-shaped electrodes include first to fourth electrodes formed on the first surface of the piezoelectric board, the first and third comb-shaped electrodes being on each side of the mover on an X-axis, the second and fourth comb-shaped electrodes being on each side of the mover on a Y-axis. The mover at least has a permanent magnet. The surface acoustic wave actuator further has a unit to selectively apply a high frequency to at least one of two electrodes one selected from the first and third comb-shaped electrodes and the other from the second and fourth comb-shaped electrodes. The surface acoustic wave actuator also has a mover holder facing the mover with the piezoelectric board interposed therebetween. The mover holder at least has a magnetic material configured to hold the mover.

REFERENCES:
patent: 4752711 (1988-06-01), Tsukimoto et al.
patent: 5006749 (1991-04-01), White
patent: 5821669 (1998-10-01), Shin
patent: 6285113 (2001-09-01), Asai et al.
patent: 6331747 (2001-12-01), Yoshida et al.
patent: 6710511 (2004-03-01), Asai
patent: 06-180428 (1994-06-01), None
patent: 08-032227 (1996-02-01), None
patent: 11-285279 (1999-10-01), None
M. Kurosawa et al., “Ultrasonic Linear Motor Using Surface Acoustic Waves”, Sep. 1996, IEEE transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 43, No. 5, pp. 47-52.

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