Fluid dynamic bearing with an immiscible fluid barrier
US8619388B2 · kind B2 · utility
1Cited by
11References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2008 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Mar 14, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2370/12
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fluid dynamic bearing with an immiscible fluid barrier deposited on the bearing oil is disclosed. One embodiment provides the fluid dynamic bearing having a seal gap to define a seal cavity. The seal cavity is filled with the bearing oil for lubricating the fluid dynamic bearing. The immiscible fluid is disposed on the bearing oil to prevent the bearing oil from evaporating from the seal cavity. In one embodiment, the immiscible fluid is insoluble in the bearing oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.