Noise barrier
US4064960A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 23, 1976 |
| Grant date | Dec 27, 1977 |
| Priority date | — |
| Expiry date | Apr 23, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01F8/007
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Disclosed is a noise barrier which comprises a hollow-cell type block having as its principal components a perforated sound-absorbing plate opposed to the noise source and a sound-insulating plate disposed opposite said sound-absorbing plate and incorporating therebetween a sound-absorbing material, a free spacing plate disposed behind said block across an intervening free air layer and means for absorbing and damping sound energy (a vibration-repressing coupling). There is also disclosed a noise barrier having a plurality of adjacent hollow-cell type blocks provided jointly with a free spacing plate by the medium of a support column so as to cover the supporting face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.