Flying sound systems
US4660728A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 4, 1984 |
| Grant date | Apr 28, 1987 |
| Priority date | — |
| Expiry date | Oct 4, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/026
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus for flying a sound system is described in which a suspension frame can be winched to a desired height from a roof beam or gantry at a concert venue. The suspension frame has a pair of hanging chains, which are each attached to opposed sides of a loudspeaker cabinet by means of coupling devices. A first webbing loop passes through retaining loops on the rear surfaces of the cabinets and through a tensioning device to ensure that the rear edges are kept in tight contact. A second webbing loop extends from a roof beam or gantry to a lowermost cabinet and includes a second tensioning device. Adjustment of the spacing of the coupling devices on the chain, the tension applied by the second tensioning device and the position of the connection point on the gantry relative to the chains together contribute to enable various required configurations of the speakers in a flown sound system to be achieved, and reproduced after dis-assembly and re-assembly. A coupling device is also described in which a fastening peg is received in an opening in a housing and is locked therein by a sliding member which engages an annular recess in the fastening peg. Means for locking the sliding member…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.