Speaker magnet assembly with included spider
US8934657B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 7, 2013 |
| Grant date | Jan 13, 2015 |
| Priority date | — |
| Expiry date | Feb 7, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/025
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnet assembly for a audio speaker provides a gap through which a voice coil assembly passes. A magnetic member, a yoke, and a pole piece form a magnetic circuit that focuses magnetic energy in the gap. A spider movably supports the voice coil assembly. The spider is coupled to one of the magnetic member or the yoke by forming the one of the magnetic member or the yoke in two parts and joining the two parts with a portion of the spider between the two parts. The spider may be formed from a thin film thermoplastic, such as polyetheretherketone (PEEK), and may be less than 10 microns thick. The portion of the spider that is between the two parts may be shaped such that a portion of the two parts are in direct contact with one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.