Partly melting rotating helical ring assembly
US3940150A · kind A · utility
18Cited by
9References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1974 |
| Grant date | Feb 24, 1976 |
| Priority date | — |
| Expiry date | Sep 26, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/933
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Partly melting rotating seal assembly surrounding a rotating shaft crossing through a wall limiting a volume of fluid kept under pressure, constituted by a solidified sleeve of the fluid to be sealed or of an intermediate fluid, contained in an external metallic sleeve fast with the wall, provided with cooling means. A very thin thread, fast with the shaft, maintains during the rotation of the shaft, a thin liquid film between the shaft and the solidified sleeve, ensuring sealing along said shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.