Vacuum pump with a bearing cage having a threaded groove
US8123412B2 · kind B2 · utility
9Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 20, 2008 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Jul 3, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2360/45
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A vacuum pump includes a high-speed rotor, and an anti-friction bearing for rotatably supporting the rotor and including an inner ring, an outer ring, a rolling body, and a cage for the rolling body both the rolling body and the cage being located in an intermediate space defined by the outer and inner rings, with the cage having a threaded groove in a section of its surface adjacent to the inner ring for insuring a continuous feeding of a lubricant to the bearing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.