Rotating sealing device
US5799951A · kind A · utility
11Cited by
10References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1996 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | Nov 21, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/43
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A rotating sealing device for sealing between a wall separating two mediums under substantially different pressure and a rotatable shaft utilizes a combination of a liquid meatal seal comprising at least one liquid metal ring and a shield means which prevents contamination of the metal ring by gases coming into contact with the liquid metal. Magnetic fluid seal, a ring of an oil material, or inert gas may be used as a shield to protect the liquid metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.