Electro-acoustic transducer

Details Electro-acoustic transducer Electro-acoustic transducer

2011-04-12

2011-04-12

Ensey, Brian (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Having electrostatic element

C381S113000, C381S116000, C381S174000, C367S170000, C367S181000

Reexamination Certificate

active

07925033

ABSTRACT:
The present invention provides a stable and excellent electro-acoustic transducer having simple constitution with which a vibration pole does not contact with stator poles by a repulsive force acting between the vibration pole and the stator poles and the vibration pole can be stably positioned in place between the two stator poles. A vibration pole is disposed between two stator poles, and surfaces of the vibration pole and the two stator poles facing to each other have electrostatically same polarity to generate an electrostatic repulsive force as a restorative force acting between the vibration pole and the stator poles, so that the vibration pole is positioned in place and electro-acoustic conversion is performed by the vibration displacement of the vibration pole with respect to the stator poles. Whereby, the vibration pole does not contact substantially with the stator poles and the vibration pole is stably positioned in place.

REFERENCES:
patent: 6201874 (2001-03-01), Croft et al.
patent: 2002/0135272 (2002-09-01), Toda
patent: A 56-165490 (1981-12-01), None

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