Magnetic disc drive device
US5633769A · kind A · utility
1Cited by
10References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 1995 |
| Grant date | May 27, 1997 |
| Priority date | — |
| Expiry date | May 11, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2370/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic disc drive device includes a labyrinth structure proximate to the ball bearings to effectively prevent scattering of particles. The labyrinth structures are formed by various arrangements where complicated passages are defined by elements arranged proximate to the inner ring and the outer ring of a ball bearing. One of the elements forming the passages being either the hub or the frame of the magnetic disc drive device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.