Abstract: A clip is disclosed for use in joining juxtaposed sound absorbing panels having a sound absorbing material held in a frame extending around the outer edge of the sound absorbing material, said frame having a projecting lip portion. The clip comprises a front plate having opposing end sections; offset members extending backwardly from the opposing end sections; and, opposing securing members extending downwardly from the back of the offset members. Adjacent sound absorbing panels are placed together by the securing members of the clip being placed between sound absorbing material and the frame of two adjacent panels. The sound absorbing panels may be either individual, smaller panels or may be a larger panel made up of smaller panels, stacked one on top of the other, and having a vertical frame member common to the vertical edges with the frame member having a U-shaped cross-section. Also disclosed is the sound absorbing panel system made possible by use of the clip and panels.

Abstract: Lightweight building structures constructed by assembling a plurality of building blocks in contiguous end to end relationship. The blocks have spaced apart and parallel opposite longitudinal walls and opposite transverse members integrally connecting said walls so as to define a substantially rectangular inner space. The top of the transverse members of at least a portion of the blocks are at a lower level than the tops of the longitudinal walls so that horizontally extending reinforcing bars may be positioned therein. Vertically extending reinforcing bars which may be surrounded by reinforcing loops are also positioned within the inner spaces defined by the contiguous blocks. Mortar is charged to the inner spaces defined by contiguous blocks to unite the blocks and reinforcing members. V-shaped vertical edges are provided on the longitudinal walls of a block to provide stronger joints between blocks.

Abstract: A panel system is disclosed including panels to provide decorative or acoustic functions or both. The panels comprise essentially hollow elements having two oppositely disposed facing sheets and an internal connecting member joining the two facing sheets. The panels may be secured edge to edge along their longitudinal edges to provide a plurality of adjacent panels. The facing sheets may be perforated and the interior provided with suitable sound absorbing material. The panels may be supported from the ceiling, wall or other fixed structure in a grid-like pattern.

Abstract: A decorative sound-absorbing modular building panel comprised of a core sheet of plywood or other ligno-cellulosic board material having a layer of textile carpeting material adhesively affixed to the respective major surfaces thereof and a peripheral frame formed of U-shaped metal channel members covering the exposed edges of the textile-overlaid core sheet and adhesively secured thereto. The panel is fabricated in a batch stacking process which eliminates the need for special jigs and presses and ensures that the resulting panel is flat and warp-free with the textile layers securely bonded thereto.

Abstract: The invention relates to a sound-absorbing radiating screen. One side of the screen is coated with a heat-insulating material, whereas on the other side perforations of optional shape are formed. The entire curve, or a part thereof, formed by the edge limiting the rims of the openings lay outside the unperforated surface of the plate of the screen.The sound-absorbing capacity of the radiating screen is increased and at the same time, the punching and perforation does not impede or interrupt the heat flow in the screen.

Abstract: There is disclosed a means and method for diminishing energy of sound. A corrugated cover having holes therethrough is mounted on a wall by ribs and an edge plate. The wall and edge plate together with the ribs and corrugated cover form a plurality of chambers, each cooperating with a plurality of the holes for diminishing the energy of impinging sound waves.

Abstract: An improved, helix appliance for linear bodies has a locking means disposed at one end thereof to impede removal of the appliance from the linear body by unauthorized persons. The locking means includes a strap which encircles the appliance at the end adjacent to the dead end or other anchoring device. When the appliance is slid on the linear body over the dead end attached to the anchoring device, it expands and engages the encircling locking means thereby requiring tools to effect its removal.

Abstract: A sandwich type acoustical panel comprising a fibrous matrix, a diaphragmatic plastic skin overlying the matrix, a perforated metal face sheet spaced from the plastic skin, and means disposed between the metal sheet and plastic skin creating an air space therebetween. The space permits sound-activated air to be distributed over the plastic skin.

Abstract: The disclosure illustrates an enclosure constructed of unique building panels. The panels are joined so as to provide an airtight enclosure for housing of air conditioning equipment, machinery and the like. The individual panels provide sound attenuation. Structural reinforcing is provided in each panel so as to eliminate the need for an enclosure framework on which the panels are to be secured.