Device for the generation of or monitoring of vibrations

Details Device for the generation of or monitoring of vibrations Device for the generation of or monitoring of vibrations

2004-11-05

2008-12-30

Kuntz, Curtis (Department: 2614)

Electrical audio signal processing systems and devices

Hearing aids, electrical

Specified casing or housing

C381S407000, C381S419000

Reexamination Certificate

active

07471801

ABSTRACT:
The present invention relates to an electromagnetic vibrator of variable reluctance type, according to a new principle which provides higher efficiency, smaller dimension, and higher reliability compared to known technology. This has been obtained by that the magnetic signal flux generated by the coil is closed through a bobbin body and one or more yokes, and wherein the bobbin body and the yokes are made of laminated metal sheets having good magnetic properties.

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