Vibration wave driven motor

Details Vibration wave driven motor Vibration wave driven motor

1991-03-01

1992-11-17

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4108

Patent

active

051646293

ABSTRACT:
A vibration wave driven motor that permits obtaining of rotation output from the output member positioned at the center of rotation. The ring-shaped vibration member for forming traveling vibration waves is fixed to the output member. At the same time, the movable member installed on the output member is press-fit to the vibration member by means of pressurizing and friction driving of the movable member is created by traveling vibration waves generated on the vibration member. The vibration wave driven motor includes plural bearing members for supporting the output member in free rotation style provided on same member.

REFERENCES:
patent: 4937488 (1990-06-01), Fujie
patent: 4983874 (1991-01-01), Yamaguchi

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