Vibration driven actuator

Details Vibration driven actuator Vibration driven actuator

1992-06-03

1993-03-09

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4108

Patent

active

051928906

ABSTRACT:
A vibration driven motor has a rail-like stator secured to a bottom plate and a vibration member for generating a travelling vibration wave in an elastic member to which an electro-mechanical energy conversion element is fixed due to an application of AC electric field to the electro-mechanical energy conversion element so as to bring a portion of the elastic member into press-contact with the rail-like stator. In the vibration driven motor a surface area of the bottom portion of the rail-like stator which comes in contact with the bottom plate is less than the a surface area of the top portion of the rail-like stator.

REFERENCES:
patent: 4645964 (1987-02-01), Hiramatsu et al.
patent: 4672256 (1987-06-01), Okuno et al.
patent: 4692650 (1987-09-01), Okumura et al.
patent: 4692651 (1987-09-01), Hiramutsu et al.
patent: 4692652 (1987-09-01), Seki et al.
patent: 4752711 (1988-06-01), Tsukimoto et al.
patent: 5017823 (1991-05-01), Okumura
patent: 5025186 (1991-06-01), Tsukada
patent: 5041750 (1991-08-01), Kitani
patent: 5079470 (1992-01-01), Kasuga et al.

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