Electrically insulating seal assembly
US4335273A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 25, 1979 |
| Grant date | Jun 15, 1982 |
| Priority date | — |
| Expiry date | May 25, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/919
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A static junction seal assembly for electrically insulating a high potential between the interior and the exterior of a housing. The housing has first and second halves, having a first seal surface and a second seal surface, respectively. The seal surfaces are covered with a dielectric grease and are juxtaposed with a non-conductive gasket therebetween. The space between the seal surfaces increases from a central location to an edge location and the gasket adjacent the central location has a maximum thickness which decreases continuously from the central location to a gasket edge location when the gasket and seal surfaces are juxtaposed in an uncompressed state. The relative configuration of the first and second seal surfaces and the gasket are thus selected so that as the gasket is progressively compressed between the seal surfaces, a gasket bulge will initially form at the central location and thereafter move from the central location to the edge location. The movement of the gasket bulge displaces and expels the grease and any entrapped air along the seal surface to form a grease filled, bubble free, insulating seal. For sealing an access port through the housing, the port is pr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.