Noise reducing air duct
US11378305B2 · kind B2 · utility
0Cited by
16References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2017 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | Jan 31, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/40
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An air duct includes a first chamber and a second chamber, the first chamber being defined between an air handling device and the second chamber, and the second chamber being defined between the first chamber and an environment exterior to the air duct, a plurality of first openings between the first chamber and the second chamber, a plurality of second openings between the second chamber and the environment exterior to the air duct, and a sound absorbing material defining at least a portion of an interior surface of at least one of the first chamber and the second chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.