Diffractor for diffracting sound of traffic on a travel surface with at least one diffraction plate disposed laterally beside the travel surface. The diffraction plate is provided with a pattern of recesses in the upper surface thereof for the purpose of diffracting the traffic noise in a direction which differs from the lateral direction. Each of the recesses is divided into individual resonators by intermediate walls provided in the recesses. The recesses have acoustically substantially non-absorbing walls and are free of acoustically absorbing material. The intermediate walls between adjacent resonators have at least one throughflow opening along which the rainwater can flow from the one resonator to the other.

A vibration reducing system for securing a first member to a second member is disclosed comprising a vibration mat spaces the first member from the second member and reduces vibration therebetween. A fastener secures the first member to the second member. A resilient member is interposed between the first member and the fastener for reducing vibration between the first member and the second member through the fastener.

A sound barrier wall has a plurality of footings spaced apart and vertical I beam wall stiffeners mounted to the footings. Alternatively, the vertical wall stiffeners are mounted to a crash barrier. A horizontal wall stiffener can be disposed between the adjacent vertical wall stiffeners. A plurality of wall panels is vertically stacked between adjacent vertical wall stiffeners. Each wall panel includes a sound insulating block, and plurality of support members disposed on opposite sides of the sound insulating block for providing structural support. Each support member has a head portion in contact with a surface of the sound insulating block and a stem portion extending into the sound insulating block. An I beam can be disposed between the vertically stacked wall panels. A top cap is mounted over the vertically stacked wall panels and protective layer is formed over the wall panels and vertical wall stiffeners.

Described are coating compositions comprising a polyester, the polyester comprising: at least one polyester which comprises a dicarboxylic acid component comprising terephthalic acid residues, and a glycol component comprising 30 to 40 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues and 60 to 70 mole % cyclohexanedimethanol residues, where the inherent viscosity of the polyester is from 0.10 to 0.70 dL/g, and where the coating composition is made from a film or sheet.

A sound barrier wall has a plurality of footings spaced apart and vertical I beam wall stiffeners mounted to the footings. Alternatively, the vertical wall stiffeners are mounted to a crash barrier. A horizontal wall stiffener can be disposed between the adjacent vertical wall stiffeners. A plurality of wall panels is vertically stacked between adjacent vertical wall stiffeners. Each wall panel includes a sound insulating block, and plurality of support members disposed on opposite sides of the sound insulating block for providing structural support. Each support member has a head portion in contact with a surface of the sound insulating block and a stem portion extending into the sound insulating block. An I beam can be disposed between the vertically stacked wall panels. A top cap is mounted over the vertically stacked wall panels and protective layer is formed over the wall panels and vertical wall stiffeners.

A particulate sound absorption board used for sound absorption surface layer of sound absorption/insulation board is a micropore particle board formed by splicing skeleton particles and filling particles which are covered with binding agent on the surface and have small angularity coefficient. The particulate sound insulation board used for sound insulation surface layer of sound absorption/insulation board is a compressed board formed by closely splicing skeleton particles, filling particles, binding agent and coupling agent, and there is a resonance sound absorption cavity that functions together with sound absorption surface layer in the board body. The particulate sound barrier consists of column and more than two overlapped sound absorption/insulation boards fixed between adjacent columns. A convex-concave joint end face is set on the sound absorption/insulation board, and the sealing cushion is bound between adjacent end faces.

The invention relates to a sound absorber (1) for a traffic route noise protection wall, wherein the sound absorber (1) comprises at least one plastic foam board (2). According to the invention, a first surface (3) of the plastic foam board (2) has a predeterminable number of sound absorber recesses (4) for predetermination of the absorption behavior with a predeterminable frequency response, wherein each of the sound absorber recesses (4) extends only through part of the thickness (5) of the plastic foam board (2).

Articles, including water bottle(s) having a weight from 200 to 800 grams comprising a polyester composition comprising at least one polyester which comprises: (a) a dicarboxylic acid component comprising terephthalic acid residues; optionally, aromatic dicarboxylic acid or aliphatic dicarboxylic acid residues; and (b) a glycol component comprising 30 to 40 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and 60 to 70 mole % of 1,4-cyclohexanedimethanol residues; wherein the total mole % of the dicarboxylic acid component is 100 mole %, and the total mole % of the glycol component is 100 mole and the inherent viscosity of the polyester is from 0.50 to 0.68 dl/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.5 g/100 ml at 25 C.; and wherein the polyester has a Tg of from 100 to 140 C.; and wherein the polyester composition contains no polycarbonate.

A sound protection component includes an absorber element and a reflection element, the absorber element being of self-supporting design.

A noise barrier wall is provided for combined sound absorption and solar power generation, comprising a plate-like main body, a large number of solar cells encapsulated in the main body, at least one absorber cartridge arranged on at least one side of the main body and filled with sound-absorbing material, and devices for fastening the main body and the absorber cartridge to one another, the main body having, on one side, a light-permeable surface section which permits light that falls on the one side of the main body to pass through to at least some of the solar cells, the absorber cartridge being arranged adjacent to the light-permeable surface section in such a way that it is in contact with the main body and covers a further surface section of the main body, this further surface section lying in the same plane as the light-permeable surface section.