Plasting molding and method and apparatus for producing the same by injection molding
US6620486B2 · kind B2 · utility
6Cited by
3References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2001 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Jun 13, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A plastic molding for use in an optical device, a method of producing the molding by injection molding, and an apparatus for practicing the method are disclosed. Only a part of a molding expected to sink is surely caused to sink while, e.g., a mirror surface is surely transferred to a desired part of the molding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.