Multi-function actuator capable of preventing vibration

Details Multi-function actuator capable of preventing vibration Multi-function actuator capable of preventing vibration

2007-06-12

2007-06-12

Kuntz, Curtis (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S400000, C381S401000, C381S412000

Reexamination Certificate

active

10953789

ABSTRACT:
The present invention relates to a multi-function actuator, in which a voice coil vibrates a sound-generating diaphragm in response to an audio signal. A vibration coil is placed on a central axis coaxial with the voice coil for generating vibration in response to the audio signal or a vibration signal. A vibration unit includes a magnet for generating a magnetic field to both of the voice coil and the vibration coil and a yoke having a predetermined mass. The vibration unit is vertically vibrated by an electromagnetic force produced from at least one of the voice coil and the vibration coil. A switch selectively applies the audio signal to the vibration coil. The multi-function actuator can prevent the vibration of the vibration unit during sound generation in response to user's switch selection.

REFERENCES:
patent: 6553125 (2003-04-01), Kobayashi et al.
patent: 6681025 (2004-01-01), Maekawa
patent: 2002/0114486 (2002-08-01), Fukawatase et al.
patent: 2771576 (1999-05-01), None
patent: 2262606 (1993-06-01), None
patent: 06113002 (1994-04-01), None
patent: 200334302 (2003-05-01), None

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