Ultra high vacuum ferrofluidic seals and method of manufacture
US6857635B1 · kind B1 · utility
21Cited by
19References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2002 |
| Grant date | Feb 22, 2005 |
| Priority date | — |
| Expiry date | Oct 18, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/43
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A ferrofluid seal incorporates a metal seal comprised of two knife-edges and a flat metal washer is formed between a pole piece and the housing at the axial interface between the parts. One knife edge is machined into the inner face of the housing flange and the other knife edge is machined into the opposing pole piece face. This metal seal effectively seals the pole piece to the housing with a seal suitable for ultra high vacuum applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.