Invention Grant
- Patent Title: Magnet-less loudspeaker
- Patent Title (中): 无磁体扬声器
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Application No.: US13422954Application Date: 2012-03-16
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Publication No.: US08705789B2Publication Date: 2014-04-22
- Inventor: Lu-Cheng Chen
- Applicant: Lu-Cheng Chen
- Agency: Li & Cai Intellectual Property (USA) Office
- Priority: TW101102556A 20120120
- Main IPC: H04R13/00
- IPC: H04R13/00
Abstract:
A loudspeaker, which includes a ferrite core, a voice coil, and a movable membrane. The voice coil is wound around the core and cooperatively defining an exciting device. The movable membrane is disposed in close proximity to the exciting device with a gap formed thereinbetween. The loudspeaker is constructed without permanent magnets.
Public/Granted literature
- US20130188822A1 MAGNET-LESS LOUDSPEAKER Public/Granted day:2013-07-25
Information query
