Sealed electro-technical device comprising two sealing joints and methods therefor
US7576972B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2003 |
| Grant date | Aug 18, 2009 |
| Priority date | — |
| Expiry date | Jul 21, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K5/062
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method is described for applying a double sealing system to an electro-technical device and an electro-technical device with a double seal. Said Electro-technical device has; a container (5) housing a functional unit (2) and including one aperture (52) provided with a cover (6), wherein said cover has a first face (61) abutting an annular surface (520) which borders said aperture (52); a first sealing joint (7) accommodated in a first groove (64) provided in the first face (61) of the annular surface (520), a second groove (65) provided on said first face (61) of the annular surface (520), and surrounding the first groove (64), said second groove (65) having a closed concavity not directly accessible from the exterior of the electro-technical device (1) when the cover is applied to the annular surface (520). Said device further has a first channel (651) for connecting the second groove (65) to a first external point of injection (9) and a second sealing joint (8), made by injection molding of a sealing substance (81) after the cover has been applied to said annular surface, provided in the second groove (65).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.