Impact drive actuator

Details Impact drive actuator Impact drive actuator

2011-03-22

2011-03-22

Rosenau, Derek J (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S309000

Reexamination Certificate

active

07911114

ABSTRACT:
An impact drive actuator comprises a fixing member, a vibrator, a vibrating member, a movable body, a drive circuit, and a friction adjustment section. The friction adjustment section includes a first electrode disposed on a surface of the movable body that faces the vibrating member and a second electrode disposed on a surface of the vibrating member that faces the movable body and electrically isolated from the first electrode. An electrostatic force is caused to act between the first and second electrodes to change an electrostatic force between the vibrating member and movable body so as to change the frictional force acting between the movable body and vibrating member.

REFERENCES:
patent: 5225941 (1993-07-01), Saito et al.
patent: 5589723 (1996-12-01), Yoshida et al.
patent: 6841899 (2005-01-01), Kaneko
patent: 2005/0242688 (2005-11-01), Yuasa et al.

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