Voice coil centering and suspension for vented pole piece
US4508941A · kind A · utility
16Cited by
18References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 28, 1982 |
| Grant date | Apr 2, 1985 |
| Priority date | — |
| Expiry date | Oct 28, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P13/045
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method for centering a voice coil in a loudspeaker having a vented pole piece. The voice coil centering is accomplished by means of a concentrically located voice coil suspension and an attached cylindrical mounting ring that can be set into a recess, or otherwise positively located on the pole piece. The pole piece is formed in such a way so as to precisely receive a suspension mounting ring and center the voice coil in the magnetic field gap with no further adjustments. This invention permits the use of a pole piece mounted voice coil suspension on a ventilated pole piece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.