Travelling-wave motor

Details Travelling-wave motor Travelling-wave motor

1988-12-29

1991-04-09

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4108

Patent

active

050067460

ABSTRACT:
A travelling-wave motor utilizes a flexible travelling waves generated in a stator for driving a rotor. The stator has an elastic vibrating body and a ceramic piezoelectric vibrator provided on one side of the elastic vibrating body. The central portion of the vibrating body is locked and supported on a central axis provided on a ground way. An output extracting projection for driving inside of the outermost periphery of the vibrating body on the one of the vibrating body and the rotor to press and contact with each other. The vibrating body and the piezoelectric vibrator is excited radially in a primary vibration mode.

REFERENCES:
patent: 4562374 (1985-12-01), Sashida
patent: 4786836 (1988-11-01), Tokushima et al.
patent: 4788468 (1988-11-01), Izukawa et al.
patent: 4829209 (1989-05-01), Kawasaki et al.

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