Sound output device
US5418336A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1993 |
| Grant date | May 23, 1995 |
| Priority date | — |
| Expiry date | Apr 28, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R7/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker unit includes a speaker housing having a lower portion and an upper portion. A drive unit is housed in the upper portion for producing and outputting sound, with the drive unit having a central axis, and a sound mirror is housed in the lower portion for reflecting the sound output by the drive unit. The mirror has a generally conical surface facing the drive unit for redirecting sound therefrom into a generally horizontal direction and a cone shape, with an apex of the cone being closest to the drive unit. A supporter supports the drive unit in a cantilever type manner above the sound mirror, and the center axis of the drive unit is offset from the apex of the sound mirror, with the drive unit supporter positioned at substantially the opposite side of the apex than the center of the drive unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.