Rigid computer memory disc manufacturing method
US4517772A · kind A · utility
3Cited by
2References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 12, 1983 |
| Grant date | May 21, 1985 |
| Priority date | — |
| Expiry date | Dec 12, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49799
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing a rigid computer memory disc where manufacturing operations may be simultaneously performed on both surfaces of the disc. The method that accomplishes the above is to initially provide a disc with a false inner diameter which is smaller than the desired inner diameter thereof. The space between the false inner diameter and the final inner diameter is used for clamping the disc. Thus, the whole final face is exposed for performing the various manufacturing steps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.