Disclosed is a ceiling type seismic impact buffer unit which may perform a buffering action of reducing vibration or the impact applied thereto attributable to earthquakes, typhoons, etc. without direct transmission of the vibration or the impact to a ceiling panel installed on a ceiling. The ceiling type seismic impact buffer unit includes a housing main body, a first coupling bolt, which is fixed into a coupling hole formed in the center of the upper surface of the housing main body and has a front end connected to an upper connection rod, a second coupling bolt, which is fixed to a sliding contactor through a sliding guide hole formed in the center of the lower surface of the housing main body and has a front end connected to a lower connection rod, and a restoring spring, which has upper and lower ends coupled to first and second fixing washers.

A slidable ladder device is configured to be sleeved on and slidable along a crossbar, and includes two support rods and a plurality of steps connected between the support rods. At least one fixing unit is connected to an end portion of one of the support rods, and includes a base member having a main portion, a connecting portion and an extension portion cooperatively defining an insertion space for insertion of the crossbar therethrough. A switchable member is pivotally connected to the connecting portion, and is rotatable relative to the connecting portion between closed and open positions, in which the switchable member closes and opens an opening of the insertion space, respectively.

An angled coupling to receive multiple pieces of threaded rod in order to adjust the location of the threaded rod, that can also be used for seismic restraints and/or storm surge restraints. The angled coupling includes a first internally threaded coupler and a second internally threaded coupler connected to the first coupler and extending from the first coupler at a defined angle from an axis thereof. The angled coupling may include additional couplings extending from the first coupler at the defined angle that may be spaced apart around the axis of the first coupling. The first coupler may be a passthrough coupler to either have a threaded rod pass therethrough or to receive a first threaded rod in a first side and a second threaded rod in a second side. The angled coupling is made of a high strength material (e.g., steel, cast iron, composites, high strength plastics, combinations thereof).

A mounting clip and a system for mounting a vertical panel from a support member suspended from a ceiling. The mounting clip has a panel mounting section, a support member receiving portion, and a movable mounting section. The support member receiving portion extends from the panel mounting section. The movable mounting section can be rotated relative to the support member receiving portion to secure the mounting clip to the support member.

A ceiling support system includes a support beam configured to enable modular assembly of the dropped ceiling and including a core portion. A length of a face of the core portion extends along a first axis transverse to a length of first and second lateral sides of the core portion, which extends along a second axis. The support beam includes a base, a first hook extension having a first clip ledge extending from the first lateral side of the core portion and a first lip extending from a first distal edge of the first clip ledge, and a second hook extension having a second clip ledge extending from the first lateral side of the core portion and a second lip extending from a second distal edge of the second clip ledge. The first hook extension and the second hook extension are configured to receive a slidable joining clip therebetween.

Described herein is a ceiling system in one embodiment includes a grid support member, ceiling panel, and grid hanger configured to support the grid support member in a suspended manner from an overhead structural support. The grid hanger includes a mounting bracket configured for attachment to the structural support and a hanger member. The hanger member is adjustable in a plurality of selectable mounting positions relative to the mounting bracket, thereby allowing the mounted height of the grid support member to be adjusted in the field. In some embodiment, the hanger member is further angularly adjustable relative to the mounting bracket to avoid installation obstacles. Locking elements are provided to secure the hanger member in the selected mounting position. In one embodiment, the grid support member may have a T-shaped cross section.

Described herein is a ceiling system in one embodiment includes a grid support member, ceiling panel, and grid hanger configured to support the grid support member in a suspended manner from an overhead structural support. The grid hanger includes a mounting bracket configured for attachment to the structural support and a hanger member. The hanger member is adjustable in a plurality of selectable mounting positions relative to the mounting bracket, thereby allowing the mounted height of the grid support member to be adjusted in the field. In some embodiment, the hanger member is further angularly adjustable relative to the mounting bracket to avoid installation obstacles. Locking elements are provided to secure the hanger member in the selected mounting position. In one embodiment, the grid support member may have a T-shaped cross section.

A mounting clip and a system for mounting a vertical panel from a support member suspended from a ceiling. The mounting clip has a panel mounting section, a support member receiving portion, and a movable mounting section. The support member receiving portion extends from the panel mounting section. The movable mounting section can be rotated relative to the support member receiving portion to secure the mounting clip to the support member.

Bracketry comprising an L-bracket, a T-bracket, and a joist hanger assembly, and methods of installation of the bracketry that eliminate the need to install a heavier duty electrical junction box and the difficulty of removing and reinstalling wiring in a new electrical junction box or fabricate bracing structure at the jobsite when performing a heavy ceiling fan or lighting fixture retrofit have been presented. The bracketry and installation methods are intended to reduce the cost and complexity of performing a retrofit installations.

A method for mounting a support assembly to a ceiling support structure is disclosed. In example aspects, the method can comprise providing the support assembly, the support assembly comprising a bracket assembly, the bracket assembly comprising a first plate, a second plate, and a seating frame; positioning the seating frame in an open position; positioning a portion of the ceiling support structure within a space defined between the first and second plates; and securing the bracket assembly to the ceiling support structure.