Duct and electronic apparatus having the duct
US6843277B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2002 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Mar 6, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1366
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention provides a duct with high sound absorbing effect and sufficient exhausting efficiency, as well as an electronic apparatus having the duct. The duct can include a hollow duct body, an inflated section arranged at an intermediate part of a passage of the duct body, and a sponge bonded on internal surfaces of the duct body and the inflated section. The duct body and the inflated section can have a thickness of 0.25 mm and be formed of a sheet member of paper impregnated with polymethylpentene on the surface thereof. The duct body can also include an intake-port side duct body and an exhaust-port side duct body, which are connected together at an angle of 90° therebetween. Further, a fan can be connected to an intake port of the intake-port side duct body 201. The inflated section can be arranged in the side of the intake port, and the cross-sectional area of the inflated section can be 1.8 times that of the duct body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.