Magnetic structure for an ironless...

Details Magnetic structure for an ironless... Magnetic structure for an ironless...

2008-09-18

2011-11-08

Mulpuri, Savitr (Department: 2812)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S412000, C381S421000

Reexamination Certificate

active

08055010

ABSTRACT:
A magnetic structure generating a magnetic field for an ironless motor of an electrodynamic loudspeaker having a mobile coil, wherein the magnetic structure generates a magnetic field in a gap in which the coil is arranged. The magnetic structure includes of a stack of three magnets corresponding to one intermediate magnet and two top and bottom covering magnets, the magnets forming a straight gap border and being located side by side, the intermediate magnet having a radial magnetic polarization, the covering magnets having identical magnetic polarizations and remanent magnetizations. The covering magnets have a radial or axial magnetic polarization. When magnetic polarization of the covering magnets is radial, remanent magnetization of each covering magnet is higher than remanent magnetization of the intermediate magnet, and when magnetic polarization of the covering magnets is axial, remanent magnetization of each covering magnet is lower than remanent magnetization of the intermediate magnet. Motors are provided.

REFERENCES:
patent: 5142260 (1992-08-01), House
patent: 5715324 (1998-02-01), Tanabe et al.
patent: 5815587 (1998-09-01), Goller
patent: 6151402 (2000-11-01), Azima et al.
patent: 6847726 (2005-01-01), Button et al.
patent: 6917690 (2005-07-01), Stiles
patent: 7263199 (2007-08-01), Trandafir
patent: 2006/0182303 (2006-08-01), Trandafir
patent: 2009/0028375 (2009-01-01), Richoux et al.
patent: 1 553 802 (2005-07-01), None
patent: 62-173968 (1987-07-01), None
patent: 10-23591 (1998-01-01), None

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