Spiral piezoelectric rotary actuator

Details Spiral piezoelectric rotary actuator Spiral piezoelectric rotary actuator

1982-04-28

1984-03-06

Miller, J. D.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310330, 310333, 310355, 310800, H04R 1700

Patent

active

044356676

ABSTRACT:
A piezoelectric rotary actuator including: a rotatable member; a spiral member fixed at its inner end to the rotatable member; one or more piezoelectric layers attached on one or both sides of the spiral member; means for rotatably supporting the rotatable member relative to the outer portion of the spiral member; and an electrode for applying a voltage across the piezoelectric layer or layers, to bend the spiral and rotate the rotatable member.

REFERENCES:
patent: 2497108 (1950-02-01), Williams
patent: 3781955 (1974-01-01), Lavrinenko et al.
patent: 3900748 (1975-08-01), Adler
patent: 4330593 (1982-05-01), Shrout et al.

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