Balancing system for a disc drive disc assembly
US5555144A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1995 |
| Grant date | Sep 10, 1996 |
| Priority date | — |
| Expiry date | Jan 12, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/211
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disc assembly for a disc drive has a balancing clip mounted on a shoulder formed on other portions of the assembly to balance the disc assembly. The disc assembly includes a cylindrical hub on which data storage discs, interspersed with ring shaped spacers, are mounted and the discs and rings are clamped into place on the hub between a flange formed on one end of the hub and a clamp ring that is secured about the other end of the hub by heat shrinking the clamp ring onto the hub. A circular shoulder is formed coaxially with the hub on a face that is, in turn, formed perpendicularly to the hub axis on either the clamp ring or the end of the hub adjacent the clamp ring. The balancing clip is a C-shaped lamella having a circularly arcuate inner periphery for mating with the shoulder. The outer periphery of the balancing clip is elliptically arcuate and is bilaterally symmetric with respect to the major axis of the ellipse to which the outer edge conforms. The shoulder is undercut to conform to a conical surface opening away from the face on which the shoulder is formed and portions of the inner periphery of the balancing clip are chamfered to conform to conical surfaces opening towa…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.