US Patent 9677269 Seismic ceiling sytem

Components for a suspended ceiling subjected to seismic events including a fixed bracket and a movable bracket presenting a contiguous flat ceiling surface under normal conditions. The movable bracket is able to slide up onto the fixed bracket during a seismic event and is returned to a neutral position with the aid of a sliding clip elastically attached to a main tee or cross runner of the ceiling. A clip for joining tee members of a suspended ceiling is provided comprising two joined arms with hooks at the end of each arm. The join of the arms sits atop a main tee member and the hooks of each arm engage cross members thus securing the members together.