Supports: racks – Specially mounted – Suspended type
Patent
1984-10-04
1987-04-28
Britts, Ramon S.
Supports: racks
Specially mounted
Suspended type
248323, A47F 508
Patent
active
046607285
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 in its locking position and enabling release of the fastening peg by manual forces in orthogonal directions are also provided.
REFERENCES:
patent: 2706632 (1955-04-01), Chandler
patent: 2905806 (1959-09-01), Tunney
patent: 2952351 (1960-09-01), Stone
patent: 4377114 (1983-03-01), Fuller
patent: 4417714 (1983-11-01), Charm
patent: 4520979 (1985-06-01), McInni
Britts Ramon S.
Eley Sarah A. Lechok
Martin Audio Ltd.
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