Surface acoustic wave motor

Details Surface acoustic wave motor Surface acoustic wave motor

1994-07-20

1996-02-20

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310313R, 310317, H01L 4108

Patent

active

054931649

ABSTRACT:
A motor includes two parts that are mobile one with respect to the other and have facing surfaces contacting each other. Progressive surface acoustic waves of the same direction are produced in each facing surface of each part. The relative speed or position of the parts is adjusted by acting on the relative frequency or phase of the progressive waves.

REFERENCES:
patent: 4019073 (1977-04-01), Vishnevsky et al.
patent: 4144519 (1979-03-01), Chamuel
patent: 4562374 (1985-12-01), Sashida
patent: 4634916 (1987-01-01), Okada et al.
patent: 5062622 (1991-11-01), Kataoka et al.
patent: 5149080 (1992-09-01), Yamamoto

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