Electrified ceiling system

In a ceiling structure of the type comprising a plurality of longitudinal hollow channel members having ends, and a plurality of transverse hollow channel members having ends supported between said longitudinal members, and having means providing support for ceiling panels thereon, with at least a major portion of such hollow channel members extending downwardly beneath said support means for such ceiling panels, the combination therewith of connector means releasably interconnecting said longitudinal and transverse members, said connector means comprising;

• a plurality of junction plates fastened on either side only of said longitudinal members, adjacent abutting ends thereof, and to be fastened thereto whereby to secure the same together in end to end relationship;
• attachment means formed on said junction plates, said junction plates and attachment means being dimensioned and adapted to fit within an adjacent end of a said transverse member, and thereby be concealed from view from below the ceiling, and,
• engagement means fastened within said ends of said transverse members, and dimensioned to interengage with said attachment means, whereby said transverse members may be connected to said longitudinal members.

A ceiling structure comprising:

• a plurality of longitudinal hollow integral one-piece channel members having side walls, and a plurality of transverse hollow integral one-piece channel members supported between said longitudinal members, each transverse member being open at each end, each end being adapted to generally abut against a longitudinal member, a connection means between each end of each said transverse member and said longitudinal member, the connection means comprising a junction plate means adaptable to be attached to a said side wall of a longitudinal member and a connector means adaptable to be attached to a said transverse member at a said open end thereof, said junction plate means and said connector means being interengagable with each other to secure said transverse member to said longitudinal member, said longitudinal and transverse members having means providing support for ceiling panels thereon, with at least a major portion of such hollow channel members extending downwardly beneath said support means for such ceiling panels, and,
• means for supporting said channel members in a building.

An electrified ceiling structure of the type having a plurality of longitudinal and transverse hollow members, at least some of which contain electrical wiring, and which also support ceiling panels and ceiling fixtures, and having means for supporting such hollow members in a building, said hollow members having spaced apart parallel upstanding flange means along their upper edges defining opening means for access to wiring and further comprising;

• an electrical connection box, having side walls, end walls, and a top wall, and said side walls and said end walls having downwardly directed edge portions defining an opening, said side walls and end walls meeting at corners, and said side walls being spaced apart a distance to fit over said upstanding flange means, and enclose the same along a portion of their length, with said opening registering with said opening means between said flange means, and including notch means cut in at least one of said side walls and end walls, and registering with said flange means, whereby said side walls may fit downwardly over said flange means, with said flange means extending upwardly into said notch means.