Disc clamp assembly for a disc drive
US5923498A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1996 |
| Grant date | Jul 13, 1999 |
| Priority date | — |
| Expiry date | Dec 17, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A disc clamp assembly is provided for securing a plurality of information storage discs to a spindle hub on a disc drive spindle motor assembly. The disc clamp assembly includes a clamping ring and a resilient grip ring. The clamping ring has a raised Inner portion and rests on the information storage disc. The resilient grip ring has an inner diameter smaller than the diameter of the spindle hub, a middle portion to receive an axial force and a means for receiving radial force. The middle portion of the grip ring rests on the raised inner portion of the clamping ring. While the means for receiving radial force of the grip ring receives a radial force to radially expand the grip ring, the middle portion of the grip ring receives an axial force and applies the axial force to the clamping ring and the information storage discs. Upon removal of the radial force to the grip ring, the grip ring maintains the axial force applied to the information storage discs by gripping the spindle hub.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.