Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Panel hangers – travelers and/or tracks – Track and bracket
Patent
1979-08-31
1981-08-25
Feldbaum, Ronald
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Panel hangers, travelers and/or tracks
Track and bracket
16 96R, 52729, A47M 1500
Patent
active
042850959
ABSTRACT:
A supporting grid system for installation under a stage ceiling which includes a plurality of struts suspended from the stage ceiling. Each strut has a centrally vertically disposed I-beam portion and a pair of spaced-apart upper arms extending upwardly and outwardly from the upper aspect of the central portion and a further pair of spaced-apart lower arms extending downwardly and outwardly from the central portion. Both pairs of arms define cruciform-shaped grooves, such grooves being identical but opposed. The strut is integral and formed from extruded aluminum. It is normally secured in place by hanger rods connected to the ceiling of the stage through support members having a horizontal flange and a support part of cruciform-shaped cross-section to mate with and be received slideably within the cruciform-shaped groove defined at the top of the strut. Similar support members are received in the bottom groove of the strut and are interconnected by further like support members to a curtain rod assembly wherein the curtain rod defines an elongated cruciform groove in its upper portion to receive cruciform-shaped part on the further support member. The struts extend fore and aft relative to the stage whereby the curtain rods extend transversely. Horizontal flanges are provided on each curtain rod's lower portion to receive wheeled curtain carriers. Both the rod and the strut are symmetrical about a vertical axis and the strut is also symmetrical about a horizontal axis. The curtain rod is adapted to receive chain links in its cruciform slot for supporting the rod either as a safety measure or for supplementary support.
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