Acoustic radiating membrane for a music box or striking watch
US8665676B2 · kind B2 · utility
3Cited by
5References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2011 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Apr 25, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K13/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The acoustic radiating membrane (1) is for assembly in a music box or a striking watch. The membrane is made with at least one area of asymmetrical shape, formed in the material of the membrane or with at least one area of asymmetrical shape having a different thickness from the general thickness of the membrane. It preferably includes two asymmetrical areas of elliptical shape (2, 3) which are partly superposed and have a different thickness from each other. The two ellipses (2, 3), preferably hollowed out of the membrane, are off-centre in relation to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.