Hearing and output transducer with self contained amplifier
US5193116A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 13, 1991 |
| Grant date | Mar 9, 1993 |
| Priority date | — |
| Expiry date | Sep 13, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R25/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An integrated hearing aid receiver is disclosed. The receiver comprises a housing having first and second outlet ports. Disposed within the housing is a diaphragm defining an output chamber and a motor chamber. An armature is disposed within the motor chamber, and has an operative element comprising a fixed end and a movable end. The armature operative element is coupled by a link to drive the diaphragm. A permanent magnet structure having a central passage therein surrounds the movable end of the armature and provides a magnetic field within the passage. A drive oil is disposed about the armature and is located proximate to the permanent magnetic structure. An amplifier is disposed within the motor chamber and between the armature and the diaphragm. Lead attachment between relatively fragile amplifier output leads and drive coil leads 66 is achieved by disposing the drive coil leads to extend from a base portion of the drive coil upwardly about its peripheral surface and having their end portions extending at an angle towards the amplifier. The amplifier leads are brought upward from the interior of the housing and into contact with the drive coil leads. Associated lead pairs are …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.