Disc molding apparatus
US5092758A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 1990 |
| Grant date | Mar 3, 1992 |
| Priority date | — |
| Expiry date | May 14, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/81
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A disc molding apparatus capable of satisfactorily accomplishing the release of a molded disc without any trouble to eliminate deformation of the disc during the release and improve quality, reliability and productivity of the disc. In the disc molding apparatus, an air inlet port is provided in proximity to an outer stamper holder of an outer ring for supplying air toward a central region of a disc molded in a cavity of a mold body from a periphery of the disc and a communication passage communicating with the air inlet passage is provided at the outer ring, so that air may be more uniformly blown against the disc during the release of the disc from a stamper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.