Inertial drive actuator

Details Inertial drive actuator Inertial drive actuator

2009-01-16

2010-10-05

Budd, Mark (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

Reexamination Certificate

active

07808153

ABSTRACT:
An inertial drive actuator includes a fixed member, a vibration substrate which is disposed on the fixed member, a displacement generating unit which causes a reciprocating movement of the vibration substrate with respect to the fixed member, a moving body which is disposed on the vibration substrate, and which is made of a magnetic body which moves with respect to the vibration substrate due to inertia with respect to the reciprocating movement of the vibration substrate, a coil which is provided on the moving body, and a driving unit which applies a voltage for causing a reciprocating movement of the moving body, and which controls a frictional force generated between the vibration substrate and the moving body by making an electromagnetic force act by applying an electric current to the coil.

REFERENCES:
patent: 5589723 (1996-12-01), Yoshida et al.
patent: 6803699 (2004-10-01), Yuasa et al.
patent: 6841899 (2005-01-01), Kaneko
patent: 7348693 (2008-03-01), Sasaki et al.
patent: 7449802 (2008-11-01), Sasaki et al.
patent: 7550896 (2009-06-01), Su
patent: 7608979 (2009-10-01), Sato et al.

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