Voice coil actuator

Details Voice coil actuator Voice coil actuator

2011-01-18

2011-01-18

Ni, Suhan (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S414000

Reexamination Certificate

active

07873180

ABSTRACT:
Provided herein is a voice-coil motor that includes a magnetic field having at least two displaced regions of higher intensity separated by a region of lesser intensity and a counter-coil disposed within the region of lesser intensity.

REFERENCES:
patent: 6175637 (2001-01-01), Fujihira et al.
patent: 6359996 (2002-03-01), Ohashi
patent: 6608541 (2003-08-01), Shiraki et al.
patent: 6639994 (2003-10-01), Proni et al.
patent: 6847726 (2005-01-01), Button et al.
patent: 6904158 (2005-06-01), Ohashi
patent: 7039213 (2006-05-01), Hyre et al.
patent: 7412071 (2008-08-01), Wu

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