US 4,361,992 AGranted

Luminaire support apparatus

AssigneeGardco Manufacturing, Inc.

InventorWilliam J. Rapp

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Abstract

A luminaire support apparatus for suspending and selectively positioning a pendant luminaire from a suspended ceiling is disclosed. The luminaire mounting stem may be positioned directly beneath a support member of the suspended ceiling. The support apparatus includes a base for carrying a ballast and an electrical junction box, and is selectively positioned between adjacent, parallel support members along a first axis parallel to the ceiling. A bracket which receives the luminaire mounting stem is mounted to a cylindrical stem projecting through a ceiling tile. The bracket receives a lower end portion of the stem, normally axially aligning the mounting stem with the cylindrical stem or offsetting the axial alignment should the mounting stem be positioned directly beneath the support member. The base receives a pair of clips selectively along a second axis parallel to the ceiling and perpendicular to the first axis. The clips mount the upper end portion of the stem to the base.

Claims6

Dependent claims

In a suspended ceiling construction having a plurality of intersecting support members defining a lattice structure in a horizontal plane and a plurality of ceiling tiles adapted to be received within the openings of the lattice structure, a support apparatus for suspending and selectively positioning a pendant luminaire having a mounting stem projecting upwardly from the luminaire, said support apparatus comprising:

a base including means for demountably supporting said base in linear slidable engagement on said lattice structure, the linear slidable engagement being along a first selected axis parallel to the plane of the lattice structure;
a generally cylindrical stem defining a second selected axis, said stem including a first end portion, a second end portion and a body portion disposed between said first and second portions, said body portion being axially dimensioned commensurate with the thickness of said ceiling tiles;
means for mounting said first end portion to said base, said mounting means being operative to align said second axis substantially perpendicular to said first axis, said base further including means for selectively receiving said mounting means along a third selected axis orthogonal to said first and said second axis;
and
bracket means for attaching the mounting stem to said second end portion, and operative to axially align or offset the mounting stem to said second end portion.

2 more elements

Dependencies are inferred from the claim text.