Apparatus for grinding the back surfaces of record molding stampers
US4435922A · kind A · utility
2Cited by
3References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 14, 1981 |
| Grant date | Mar 13, 1984 |
| Priority date | — |
| Expiry date | Sep 14, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/81
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An apparatus is disclosed for grinding the back surfaces of record molding stampers. The apparatus is comprised of a holder in which the stamper is mounted and rotated and a pressure-controlled grinder arm which is designed to engage the back surface of the stamper with an abrasive while the stamper is being rotated so as to remove surface defects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.