Sound barrier
US5217771A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 1991 |
| Grant date | Jun 8, 1993 |
| Priority date | — |
| Expiry date | Jul 10, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2902
- WIPO fieldCivil engineering
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.