Miniature hearing aid having a bindable multi-layered amplifier arrangement
US4710961A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 20, 1985 |
| Grant date | Dec 1, 1987 |
| Priority date | — |
| Expiry date | May 20, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/2009
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A miniature hearing aid comprises an input transducer (18), amplifier (19) and control elements (8, 10) as well as a current source and output transducer (20), where at least a part of the amplifier (19) is applied on mounting surfaces hinged together and lying on mounting plates (46 to 49) and the articulated connections (60 to 63) have a flexible support provided with electrically conducting tracks (50 to 52, 57). The desideratum is, in view of the small space in miniature hearing aids, to obtain a large area for the application of the structural components or elements. This is achieved according to the invention in that the amplifier (19) is designed as a multi-layered system which comprises at least three layers (40 to 42), of which the two outer ones (42, 43) carry the physical or structural elements (53, 54, 54.2) lie over a so-called neutral intermediate layer (40) provided with conductor paths (57), and are subdivided at several mutually opposite points into structural sections, and that the mechanical strength of the intermediate layer (40) permits deformation of the arrangement. The invention is applicable for hearing aids to be worn in the vicinity of the ear, in particu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.