Magnet retention system in planar loudspeakers
US7627134B2 · kind B2 · utility
7Cited by
49References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2004 |
| Grant date | Dec 1, 2009 |
| Priority date | — |
| Expiry date | Jul 13, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/13
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electro-dynamic loudspeaker includes a frame, a magnet and a diaphragm. The frame includes a body portion defining a magnet mounting surface as well as a plurality of protrusions extending from the magnet mounting surface. The magnet is magnetically attracted to the body portion of the frame. The magnet is restricted from movement along the magnet mounting surface by at least one protrusion. The diaphragm is spaced apart from the magnet and coupled to the frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.