Apparatus for creating acoustic energy in a balanced receiver assembly and manufacturing method thereof
US7203334B2 · kind B2 · utility
20Cited by
7References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2003 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | May 22, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A paddle (142) of a diaphragm (118) of a receiver (100) is manufactured using one or more layers of a material selected for their inertial mass and rigidity. The paddle may have a layered structure with stiff outer layers such as aluminum and a less dense inner layer, such as thermoplastic adhesive. The inner and outer layers are selected to give an inertial mass matching that of an armature (124) of the receiver (100) and to give a lowest frequency bending resonance above a desired range, for example, 14 KHz.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.