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US 5,493,164 AGranted
Surface acoustic wave motor
AssigneeCrouzet Automatismes
InventorBertrand Nogarede
Life of this patent
Estimating the term…
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.
Claims7
A surface acoustic wave motor including
- two parts that are mobile one with respect to the other, each part having a facing surface and a distant surface, said two parts being arranged with the facing surface of one part in direct and continuous contact with the facing surface of the other part,
- excitation means mounted on the distant surface of each part for acoustically exciting each part and for producing on each facing surface progressive surface acoustic waves of the same direction, and
- control means operationally connected to said excitation means for causing said excitation means to adjust the relative frequency or phase of said progressive waves.
Dependencies are inferred from the claim text.