Noise-protection screen

• US 4,146,113 A
• Filed: 09/16/1977
• Issued: 03/27/1979
• Est. Priority Date: 08/27/1974
• Status: Expired due to Term

• Current Assignee: Gavels Arkitektkontor AB
• Original Assignee: Gavels Arkitektkontor AB
• Inventors: Gavel, Peter
• Primary Examiner(s): Tomsky, Stephen J.
• Application Number:
  US05/834,135
• Time in Patent Office: 557 Days
• Field of Search: 181/210, 181/295, 181/284, 181/290, 256/13.1, 256/24, 256/73, 244/114 B
• US Class Current: 181/210
• CPC Class Codes: E01F 8/0035 with undulated surfaces E01F8/0029, E01F8/0052 take precedence

Abstract

The noise protection screen of the present invention comprises a plurality of hollow tubular members, preferably of equal length and substantially elliptical in cross-section. The hollow members are formed of a flexible material and inclined at an angle to the horizontal. The hollow members are interconnected by corresponding tongue-and-groove engagement whereby the engaged grooves are deformed in a manner to provide a clamping action of the grooves about the corresponding tongues.

Claims

1. A noise protection screen comprised of a plurality of hollow tubular members of equal length and substantially ellipitical in cross-section, each of said hollow members being formed of flexible material and being arranged in a vertical plane and inclined at an angle of from 15 to 75 degrees to the horizontal, said hollow members being interconnected by corresponding tongue-and-groove engagement and interlocked by action of the weight of the hollow members upon each other whereby the engaged grooves are deformed in a manner to provide a clamping action of the grooves about the corresponding tongues, each hollow member having a fixed projecting tongue extending longitudinally on one side and a recessed groove extending longitudinally within an opposing side, the tongue-and-groove engagement occurring between a fixed tongue of one hollow member and a corresponding groove within an adjacent hollow member.

2. The noise protection screen of claim 1 wherein the hollow members are comprised of a plastic material.

3. The noise protection screen of claim 1 wherein the hollow members are filled with sand.

4. The noise protection screen of claim 1 wherein the hollow members are filled with sound absorbing material.

5. The noise protection screen of claim 4 wherein said sound absorbing material comprises foamed plastic.

6. The noise protection screen of claim 4 wherein said sound absorbing material comprises mineral wool.

7. A noise protection screen comprised of a plurality of hollow tubular members of equal length and substantially elliptical in cross-section, each of said hollow members being formed of flexible materials and being arranged in a vertical plane and inclined at an angle of from 15 to 75 degrees to the horizontal, the hollow members being interconnected by corresponding tongue-and-groove engagement and interlocked by action of the weight of the hollow members upon each other whereby the engaged grooves are deformed in a manner to provide a clamping action of the grooves about the corresponding tongues, each hollow member having a fixed projecting tongue extending longitudinally on one side and a recessed groove extending longitudinally within an opposing side, the tongue-and-groove engagement occurring between adjacent grooves of adjacent hollow members and a loose tongue which engages said adjacent grooves, together with engagement between a fixed tongue of at least one of said adjacent hollow members and a corresponding groove in an additionally adjacent hollow member.