Invention Grant
- Patent Title: Magnetic circuit for loudspeaker, and loudspeaker using same
- Patent Title (中): 扬声器用磁路，扬声器使用
-
Application No.: US14453614Application Date: 2014-08-07
-
Publication No.: US09277304B2Publication Date: 2016-03-01
- Inventor: Mitsukazu Kuze , Satoshi Koura , Shinya Mizone , Goro Tsuchiya , Tetsushi Itano
- Applicant: Panasonic Corporation
- Applicant Address: JP Osaka
- Assignee: Panasonic Intellectual Property Management Co., Ltd.
- Current Assignee: Panasonic Intellectual Property Management Co., Ltd.
- Current Assignee Address: JP Osaka
- Agency: Panasonic Patent Center
- Priority: JP2012-061450 20120319; JP2012-061451 20120319
- Main IPC: H04R9/00
- IPC: H04R9/00 ; H04R1/00 ; H04R9/02 ; H04R15/00
Abstract:
The loudspeaker magnetic circuit is an external-magnet type, and has a magnet, an upper plate, and a lower plate. The magnet is sandwiched between the upper plate and the lower plate. At least one of the lower plate and the upper plate is formed of magnetic powder or a mixture of a magnetic powder and resin.
Public/Granted literature
- US20140348374A1 MAGNETIC CIRCUIT FOR LOUDSPEAKER, AND LOUDSPEAKER USING SAME Public/Granted day:2014-11-27
Information query
