Vibration actuator

Details Vibration actuator Vibration actuator

1996-08-22

1998-12-29

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H02N 200, H01L 4108

Patent

active

058545298

ABSTRACT:
A heterodegenerate type of vibration actuator, which during driving, when noise arises, does not suffer from a reduced driving efficiency nor is the driving force reduced. Such a vibration actuator includes a support member, an elastic body which generates a driving force at a driving surface D, which is an end surface located on an outer surface of the support member, a relative motion member that is in compressive contact with the elastic body located so as to rotate freely on the circumference of the mounting member, and a fixed member which fixes the support member and the elastic body. A mounting standard member regulates the positional relationship of the elastic body and the support member.

REFERENCES:
patent: 4947076 (1990-08-01), Kumada
patent: 4965482 (1990-10-01), Ohnishi et al.
patent: 5646469 (1997-07-01), Tsukimoto et al.
U.S. application No. 08/580,973, Mitsuhiro Okazaki et al., filed Jan. 3 1996, Nikon Corporation.
U.S. application No. 08/659,828, Takatoshi Ashizawa, filed Jun. 7, 1996, Nikon Corporation.
U.S. application No. 08/685,429, Daisuke Saya, filed Jul. 24, 1996, Nikon Corporation.

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