Loudspeaker
US6134337A · kind A · utility
6Cited by
4References
6Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Dec 9, 1997 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Dec 9, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R7/14
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a loudspeaker, a diaphragm is equally divided circumferentially into a plurality of regions which have the same shape with each other. Each of the divided regions is formed by a hyperbolic paraboloid. The hyperbolic paraboloid is obtained by moving a straight line connecting between two segments along these two segments. The hyperbolic paraboloid is large in strength and can suppress generation of the dividing vibration of the diaphragm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.