Magnetic fluid seal
US6672592B1 · kind B1 · utility
3Cited by
6References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 8, 2002 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Jan 28, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/43
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A magnetic fluid seal with an excellent quality for reduction of leak of magnetic fluid. Among the projections of the pole pieces, the projections, that are nearest to the permanent magnet, are placed at positions intruding into the permanent magnet sides to hold the magnetic fluid in a space between the projections and the surface of the shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.