Method of producing hearing aids
US5056204A · kind A · utility
61Cited by
6References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 17, 1990 |
| Grant date | Oct 15, 1991 |
| Priority date | — |
| Expiry date | May 17, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49995
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
For hearing aids to be worn in the ear initially the measurements of the inner space of the ear are determined by a laser apparatus and the measurement are stored in a computer. The computer controls a milling cutter on which a blank consisting of plastic material into which all necessary components, such as electronic amplifier and sound transducer have been molded is shaped by means of a milling operation to provide a shape corresponding precisely to the inner space of the ear. The method eliminates the time consuming work for the production of a mold and the purchaser can obtain immediately a precisely fitting hearing aid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.