Fluid guideline, especially in the form of a tube for taking up untreated air in an air filter of a motor vehicle
US7249652B2 · kind B2 · utility
14Cited by
15References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 11, 2002 |
| Grant date | Jul 31, 2007 |
| Priority date | — |
| Expiry date | Aug 5, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05C2225/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fluid guideline with at least two structural elements made of substantially soundproof material has at least one opening for sound damping. An impedance change (in particular in the form of an impedance discontinuity) of the flow resistance of the fluid flowing through the fluid guideline is present between two adjacent structural elements, and the at least one opening is arranged in the region of the impedance change between two adjacent structural elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.