Vibration wave driven motor

Details Vibration wave driven motor Vibration wave driven motor

1992-07-29

1993-12-28

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4108

Patent

active

052742946

ABSTRACT:
A vibration wave driven motor produces a travelling wave in an elastic body and thereby moves the elastic body relative to a member pressed against the elastic body. The travelling wave is a combination of a plurality of standing waves generated by application of out-of-phase alternate electric fields to a plurality of driving element groups for an electro-mechanical energy conversion element bonded to the elastic body. The electro-mechanical energy conversion element has an electrode which is patterned such that cuts thereof coincide with the nodes of the standing wave generated in the elastic body.

REFERENCES:
patent: 4562373 (1985-12-01), Tokushima et al.
patent: 4692652 (1987-09-01), Seki et al.
patent: 4786836 (1988-11-01), Tokushima et al.
patent: 4788468 (1988-11-01), Izukawa et al.

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