Abstract: A carriage has a wheeled base with an articulated frame for supporting a construction panel in a multitude of operator-defined orientations during transportation, fitting and installation of the panel. The frame and a construction panel secured to the frame are movable relative to the base between (a) a reclined transport position in which the center of mass of the construction panel overlies the area bounded by the wheels of the base to enhance stability of the carriage during transportation of the panel, and (b) an upright installation position in which the center of mass of the construction panel is located forwardly of the wheels of the base. In the installation position of the frame, roller bearings below the frame transfer the weight of a construction panel to the surface on which the carriage operates to enhance stability and facilitate rolling movement of the carriage.

Abstract: An air aspirating nozzle for propelling a stream of foam or a slurry of solid particulates to a target surface includes a stream shaping member within the nozzle to form a rotating, columnar stream of liquid and air that maintains a high degree of coherence over a considerable throw distance. The stream shaping member includes a cylindrical body portion held axially in place within the nozzle body by a plurality of vanes extending between the body portion and the inner nozzle wall. The vanes are arranged in a forward-raked attitude, and the vane surfaces are configured to impart a rotation to a fluid column passing through the nozzle.