Vibration wave driven motor

Details Vibration wave driven motor Vibration wave driven motor

1994-08-26

1996-04-16

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310325, H01L 4108, H02N 200

Patent

active

055085806

ABSTRACT:
According to this invention, a piezo-electric element as an electro-mechanical energy conversion element is urged against a vibration member, and a vibration is excited in the vibration member by a vibration produced in the piezo-electric element. Thus, a contact member, e.g., a rotor which contacts the vibration member, and the vibration member are moved relative to each other. The rigidity of the outer side of the vibration member is larger than that of its inner side.

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"Design of matching networks for acoustic transducers" by R. Coates et al. Ultrasonics 1988, vol. 26 Mar.

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