Soundproofing for a gas pipe, in particular for the fan jet of a turbojet, and equipment for its fabrication
US4449607A · kind A · utility
17Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1982 |
| Grant date | May 22, 1984 |
| Priority date | — |
| Expiry date | Jan 26, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24149
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Soundproof lining for a gas pipe, in particular for a turbojet fan jet, of the type including a multiplicity of thin, perforated panels juxtaposed by tiling, as well as an intermediate layer between the wall of the pipe and each of said panels to delimit with said perforated panel a multiplicity of resonant acoustical cavities in which the acoustical vents consist of the ports in the perforated panel. According to the invention, in order to make the tubular vents, each perforated panel has a short, tubular sleeve at right angles to each port and located on its face opposite the wall of the pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.