Spindle motor having overmolded stator
US5694268A · kind A · utility
68Cited by
23References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1995 |
| Grant date | Dec 2, 1997 |
| Priority date | — |
| Expiry date | Oct 30, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B25/043
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A disc drive spindle motor for rotating at least one disc in a data storage device includes a base, a shaft, a rotor and a stator. A bearing interconnects the rotor with the shaft and allows the rotor to rotate about the shaft. An overmold encapsulates at least a portion of the stator and provides the stator with a smooth external surface. The overmold mechanically isolates the stator from the base and damps sympathetic vibrations in the stator structure to reduce the generation of acoustic noise in the storage device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.