Micromachined magnetically balanced membrane actuator

Details Micromachined magnetically balanced membrane actuator Micromachined magnetically balanced membrane actuator

2006-05-30

2006-05-30

Ni, Suhan (Department: 2643)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S414000, C381S417000, C381S420000

Reexamination Certificate

active

07054460

ABSTRACT:
The present invention relates to an miniature actuator especially suitable for hearing aid applications. The actuator according to the present invention operates according to the change in reluctance principle. In particular, the actuator according to the present invention operates in a balanced configuration comprising two planar coils, two magnets, a membrane and a spacer chip providing the necessary back chamber volume.

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patent: 0 548 580 (1993-06-01), None
patent: 0 851 710 (1998-07-01), None
“Magnetic Flux Generator for Balanced Membrane Loudspeaker”. Jörg Rehder, et al., Denmark, 5 pgs.
“Balanced Membrane Micromachined Loudspeaker for Hearing Instrument Application”, Jörg Rehder, et al., Denmark, 4 pgs.
“Balanced Membrane Micromachined Loudspeaker for Hearing Instrument Application”, Jörg Rehder, et al, Institute of Physics Publishing, Journal of Micromechanics and Microengineering, Jan. 5, 2001, pp. 334-338.
JP 9331596 A (Abstract).
JP 7015797 A (Abstract).

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