Spindle hub-disc interface
US4672488A · kind A · utility
Inventor
Key dates
| Filing date | Aug 22, 1984 |
| Grant date | Jun 9, 1987 |
| Priority date | — |
| Expiry date | Aug 22, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/1473
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
To overcome problems of precise permanent location of aluminum Winchester discs relative to their steel drive spindle during temperature variations, in one form of the invention a plastic washer is placed between the disc and the underlying flange of the spindle. The washer maintains contact by static friction without slippage but is compliant with shear forces occasioned by temperature changes and, by reason of its elasticity, returns the members to their initial position when the original temperature is restored. In a second form of the invention, the steel flange is grooved to form a thin ring and the ring is slotted to provide flexible fingers on which the disc rests. These fingers likewise maintain permanent contact with the disc and are likewise compliant with changes in relative position occasioned by temperature variations, restoring the disc to original position relative to the spindle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.