Flat disk polishing apparatus
US4621458A · kind A · utility
6Cited by
4References
3Claims
0Family size
Inventor
Key dates
| Filing date | Oct 8, 1985 |
| Grant date | Nov 11, 1986 |
| Priority date | — |
| Expiry date | Oct 8, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B37/08
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An apparatus for polishing a surface such as the surface of a disk which avoids rounding of the edge of the surface and reduces wear of the polishing medium. The apparatus includes a buffer plate whose boundary conforms to and is adjacent to the edge of the surface being polished but the buffer plate is displaced in a direction perpendicular to the plate by a small increment so that droop of the polishing medium over the edge of the surface being polished is reduced. Means of establishing the incremental displacement is disclosed in terms of the required polishing pressure and breakdown pressure of the polishing medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.