Hydrodynamic seal and a method for providing the same
US6273426A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1999 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | Jul 22, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/928
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A hydrodynamic seal efficiently protects an interior cavity of an enclosure from external elements. The seal has an upper portion having a recess formed in a center section of the upper portion. A lower portion, having a raised portion, abuts the upper portion and forms a passage between the two portions. The passage between the upper and lower portions is reduced in area along the recessed and raised portions. When air with water and/or dust passes through the passage, a velocity and pressure change occurs, thereby the water and/or dust is deposited in a channel. The water and/or dust flows along the channel and is exhausted to an external so that the water and/or dust is prevented from entering the interior cavity of the enclosure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.