Gaseous blast reducer
US4392412A · kind A · utility
12Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1980 |
| Grant date | Jul 12, 1983 |
| Priority date | — |
| Expiry date | Oct 30, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41F3/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A gaseous blast reducer employs a membrane which is effective to contain a ass of gas having properties different from air, in the vicinity of the source of the blast. The blast is forced to propagate through the mass of gas before propagating in the air. An acoustic mismatch caused by the difference in properties between the gas and air reduces or attenuates the blast.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.