Electric spindle motor
US6020664A · kind A · utility
32Cited by
7References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 18, 1999 |
| Grant date | Feb 1, 2000 |
| Priority date | — |
| Expiry date | May 18, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2370/12
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An electric spindle motor has a base assembly (19) and a hollow notatable hub (16) housing a motor. The hub (16) is mounted for rotation about an axis and a stator (12) is mounted on the base assembly (19) inside the hub (16). A liquid filled journal bearing (11, 21) acts between the base assembly (19) and the hub (16) to provide radial support of the hub (16). A gas filled thrust bearing (26, 27, 35) also acts between the hub (16) and base assembly (19) to provide at least axial support of the hub (16).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.