Abstract: Suspended ceiling systems are formed from a series of modules which may have a vaulted design and a light fixture therein. These modules must be supported from the main runners or cross tees of a suspended ceiling system. The support structure herein is fastened at one end to the main runners or cross tees of the suspended ceiling system and carry on their other end the main horizontal support members for the light fixture and vaulted module.

Abstract: A novel decorative ceiling comprising:1. a grid of T-bar runners and cross members,2. a flat horizontal rigid plastic sheet, preferably having a pattern of areas transmissive to light and areas opaque to light, the edges of which rest on said T-bars,3. a source of illumination in the plenum above said grid,4. adhesively joined to said sheet and extending downwardly from transmissive areas, a plurality of plastic cells having planar sides, said cells being open at their bottom ends, the planar sides of adjoining cells being spaced apart by a distance at least equal to the width of the horizontal portion of said T-bars.Also, the subcombination, adapted to be supported at its edges by T-bars, comprising:1. a flat horizontal rigid plastic sheet having a pattern of areas transmissive to light and areas opaque to light the edges of which rest on said T-bars,2.

Abstract: The prefabricated construction comprises a framework comprising a lower structure, an upper structure and vertical uprights interconnecting the structures. Each structure comprises a substantially rectangular frame which has at each corner a vertical corner member. The corner members are adapted to fit with the uprights and detachable means are provided for fixing and guiding the corner members and uprights.The upper and lower structures may be placed directly together with the component parts of the construction enclosed between these assembled structures for transporting the construction.

Abstract: A self-supporting lighting fixture which is used for night lighting of tennis courts or other gaming surfaces, parking lots and service areas, is constructed of a combination of longitudinal metal members to which are fastened sheets of reflective metal. These reflective sheets together with their associated longitudinal members form a body in the shape of a hollow prism. The whole fixture comprises a structure in which the reflective sheets are stressed and carry both bending and torsional stresses.

Abstract: A baffle assembly comprises a series of cross baffles which are pivotally connected, in depending relation, to a pair of longitudinal baffles, so that the longitudinal baffles and cross baffles may be folded together and thereby reduce considerably the shipping and storage space. Between spaced pairs of such baffle assemblies, a series of transverse baffles may be pivotally connected to angles which rest on outwardly extending ledges of the adjacent baffle assemblies. The space between adjacent baffle assemblies may be covered by lateral extensions of the cross baffles pivoted to the longitudinal baffles.

Abstract: This is a recess ceiling dome particularly adapted to be installed in an existing building and specifically includes supporting members for ceiling joists that have been cut out to provide the opening to receive the dome which is adapted to permit a chandelier to be mounted therein while still providing adequate head room thereunder. This invention also consists in the method of installing the dome which includes initially cutting out an opening in the finished layer of the ceiling to expose the ceiling joists to be cut, supporting each of the joists to be cut from a portion of the frame structure of the existing building thereafter cutting through the joists around the edges of the opening and installing a chandelier receiving dome in the opening thus provided.

Abstract: A light holder for releasable attachment to an overhead member, such as a rail associated with the grid system of a suspended ceiling. The light holder includes a pair of elongated support members which are fixed together adjacent corresponding one ends thereof. A pair of oppositely facing clips are provided adjacent said one ends of the support members, which clips are adapted to engage the flanges of an overhead rail. The support members are provided with a further pair of oppositely facing clips adjacent the opposite ends thereof. The opposite ends of the support members are normally positioned closely adjacent one another, but can be resiliently deflected outwardly to separate the further clips to permit positioning of an overhead rail therebetween. Release of the opposite ends of the support members, causes the further clips to be moved inwardly into clamping engagement with the flanges of the rail.

Abstract: A mounting device, particularly for ceiling or wall fittings, comprising a first member adapted to engage a means of attachment provided in a mounting surface by means of a fastening device whereby said first member will bear against said mounting surface, and a second member having means for engagement with a complementary attachment device of said first member said fastening device having a groove provided in said first member and inclined in relation to said mounting surface to gradually engage said means of attachment when said first member is being secured to said mounting surface.