Plenum mounted, flat panel masking loudspeaker system and method for mounting a masking loudspeaker in a ceiling plenum
US6164408A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1999 |
| Grant date | Dec 26, 2000 |
| Priority date | — |
| Expiry date | Mar 10, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K13/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A plenum mounted, flat metal panel diaphragm masking loudspeaker includes a flat, stamped sheet metal frame which has a deployed state and an undeployed, flat state well suited to storage or shipping. A large, movable tab at the bottom of the frame is weakened by a series of small apertures and forms a hinge or fold line. Electrical accessories including a transformer, a rotary switch for selecting transformer taps and signal connections are included in an enclosed box mounted on the foldable tab. The flat panel masking loudspeaker is shipped flat in the undeployed state and then the large tab is deployed by being folded outwardly before installing the flat panel masking loudspeaker in a ceiling plenum. During installation, the tab is folded along the hinge or fold line out to approximately 90.degree. with respect to the rest of the masking speaker frame, the entire assembly is then held overhead by the installer and is positioned above the suspended ceiling T-bar supports, within the plenum, whereupon the assembly is lowered or pushed downwardly and is held in place by one or more spring clips gripping the speaker frame and the ceiling T-bar supports. Alternatively, the frame may …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.