Traveling wave piezoelectric motor

Details Traveling wave piezoelectric motor Traveling wave piezoelectric motor

1997-01-30

1998-10-27

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310323, 310369, H01L 4109, H02N 200

Patent

active

058281584

ABSTRACT:
Traveling-wave piezoelectric motor comprising at least one stator (1, 2) consisting of an annular body with which are associated two groups of piezoelectric elements (3, 4) in the form of rods in permanent contact with the stator and with a connector (7) for their excitation, and a rotor (12, 13). The rods (3, 4) are housed in a drum (5, 6) made of an insulating material whose holes have a constriction (24) for holding the rods.

REFERENCES:
patent: 4272200 (1981-06-01), Hehl
patent: 4431934 (1984-02-01), Kleinschmidt et al.
patent: 4785177 (1988-11-01), Besocke
patent: 4944580 (1990-07-01), MacDonald et al.
patent: 5594330 (1997-01-01), Jacobsen
patent: 5626312 (1997-05-01), Head
patent: 5693997 (1997-12-01), Griffith et al.
Patent Abstracts of Japan 01243860A (Matsushita Eelctric Inc. Co. Ltd.), 28 Sep. 1989, *abrege*.
French Search Report Nov. 15, 1996 France.

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