Loudspeaker apparatus
US4064966A · kind A · utility
22Cited by
4References
2Claims
0Family size
Inventor
Key dates
| Filing date | Mar 11, 1976 |
| Grant date | Dec 27, 1977 |
| Priority date | — |
| Expiry date | Mar 11, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/227
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A loudspeaker apparatus is disclosed herein having a sealed enclosure for housing a pair of multiple pairs of matched loudspeakers. The rear faces of the loudspeakers are effectively arranged so as to be directly exposed to each other via a tone chamber and operably coupled to be energized so as to move concurrently inward and outward. The respective pairs of loudspeakers having their effective radiation directed in the same direction along parallel longitudinal axis for radiating acoustical energy in a combined predetermined propagation pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.