Method and apparatus for separating a stamper from a mold
US4381964A · kind A · utility
6Cited by
14References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 29, 1981 |
| Grant date | May 3, 1983 |
| Priority date | — |
| Expiry date | May 29, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/19
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An apparatus and method for separating a metal stamper from a metal mold on which the stamper is electro-formed. The gas flows between the mold and stamper to separate the stamper from the mold which are maintained separated by the vacuum applied to their back surfaces. Means is provided for centering the mold-stamper assembly between the backing plates just before the assembly is clamped between the backing plates. Means is provided for mechanically bending the outer peripheral portion of the mold-stamper assembly back and forth to separate the peripheral portion of the stamper from the mold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.