Method of making a travelling-wave motor

Details Method of making a travelling-wave motor Method of making a travelling-wave motor

1990-07-13

1991-10-15

Hall, Carl E.

Metal working

Piezoelectric device making

310323, H01L 4122

Patent

active

050562010

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
patent: 4788468 (1988-11-01), Izukawa et al.
patent: 4829209 (1989-05-01), Kawasaki et al.

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