Stabilized disk drive spin motor
US4965476A · kind A · utility
62Cited by
7References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 20, 1989 |
| Grant date | Oct 23, 1990 |
| Priority date | — |
| Expiry date | Apr 20, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K21/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An under-the-hub spin motor for a disk drive includes a stabilizer for supporting the outer diameter of the stator to stiffen the base of the spin motor. Stiffening the base in the region surrounding the shaft of the motor increases the resonant frequency of the spin motor, increasing the tolerance of the spin motor to applied vibrations. The stabilizer may be a ring formed integrally with the base plate of the disk drive or the mounting flange of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.