Chambered headrest mounting for stereophonic loudspeakers
US4638884A · kind A · utility
42Cited by
5References
10Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Jul 11, 1985 |
| Grant date | Jan 27, 1987 |
| Priority date | — |
| Expiry date | Jul 11, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2/879
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A headrest hollow casing has a central vented chamber connecting end chambers in which stereophonic loudspeakers are mounted and such central chamber is loosely filled with batting or other sound-damping material. The casing is supported by mounting rods or mounting bar angularly adjustable relative to the casing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.