Sound barrier

Details Sound barrier Sound barrier

1991-07-10

1993-06-08

Robinson, Ellis P.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

428 365, 428 364, 428 345, 428 83, 428 81, 428121, 428122, 428188, 428101, 428358, 428 99, 523091, 181284, 181287, 181290, 181291, 181294, B32B 108, E04C 330, E04B 182, E04B 900

Patent

active

052177718

ABSTRACT:
A device is provided preventing the transmission of sound, the device being fabricated of polymer composition and comprising a hollow core member formed of fiber-reinforced thermosetting resin, and at least outer member formed of unreinforced thermoplastic resin which is friction fit to the core member. The core member and outer members are preferably formed by pultrusion and extrusion, respectively. Adjacently disposed devices are connected together to form a fence-like barrier through which few or no sound waves are allowed to pass. This system is advantageously used to prevent sound waves emanating from a large transportation structure such as a highway, railroad track, or airport.

REFERENCES:
patent: 4840826 (1989-06-01), Schirasaki et al.
patent: 4939037 (1990-07-01), Zign et al.

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