Abstract: An electrical junction box to be used when supporting a relatively heavy hanging load from the underside of a joist/beam at an installation site. In one embodiment a slotted pancake dish internally supports an arcuately displaceable bracket both of which have coincident slots through which to receive fasteners by which the load is to be supported. A removably disposed lead box in which electrical leads are received extends normally upright to the plane of the pancake dish and is adapted to he positioned thereon off center in communication with an opening through the dish. A partially circular shell section can optionally be utilized by being removably secured on the pancake dish opposite the lead box so as to cooperate with the lead box when utilized in forming an externally appearing cylindrical canister-like configuration.

Abstract: An improved hanger assembly for the support of heavy hanging loads at the underside of a ceiling. The assembly is longitudinally expandable via a threaded rod secured between relatively displaceable longitudinal bars in which the rod includes an allthread having a double to triple lead for increasing the expansion rate while teeth at the distal end of each bar are configured to arcuately displace inward of the joists in the course of joist penetration to effect a grasping penetration therewith.

Abstract: A hanger assembly for supporting a vertical load at a selected site flush mounted beneath the underside of a drop ceiling. Comprising the assembly is a pair of bars normally intersecting in T formation and mounted onto the T rails of a lattice framework supporting the individual ceiling panel at the selected site. The bars can be variably positioned so as to intersect at any selected site location and by means of a bracket are permanently secured together with a junction box at the underside of the intersection. The bracket in turn is connected for static loading to a depending chain attached to the building structure above the ceiling and adjustably rendered taut to a predetermined tension by means of a turnbuckle attachment. For supporting an attached load, the load bolts have flat heads with canted ends and depend through apertures in both the top wall and ears of the junction box.