Implantable hearing aid transducer

Details Implantable hearing aid transducer Implantable hearing aid transducer

2007-01-19

2008-12-23

Gilbert, Samuel G (Department: 3735)

Surgery

Surgically implanted vibratory hearing aid

Reexamination Certificate

active

07468028

ABSTRACT:
A variable reluctance motor is provided having a linear relationship between an input current and an output force. According to one aspect of the invention, the motor comprises a stator, an armature, and at least one magnetic member to provide a biasing force on the armature. According to this characterization, the motor also includes a drive coil to generate an electromagnetic field in response to a current input. The electromagnetic field, in turn, moves the armature relative to the stator during motor operation.

REFERENCES:
patent: 3984711 (1976-10-01), Kordik
patent: 4628907 (1986-12-01), Epley
patent: 5024224 (1991-06-01), Engebretson
patent: 5456654 (1995-10-01), Ball
patent: 5800336 (1998-09-01), Ball et al.

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