Method for obtaining an optical lens and joint and device for the implementation thereof
US7718098B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2003 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Mar 26, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/808
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The method includes the use of a closed mold consisting of two shells (2,3) and an annular joint (4), the joint having a hole (19) for filling the mold cavity with a polymerizable material, the introduction of the material occurring after a stage in which an external mechanical effort is exerted in order to bring the shells (2,3) together and before a stage in which the effort is relaxed. In the joint (4), the filling hole (19) includes two sections. A first section extends from the molding cavity to the second section which is wider. The device includes elements (34-40) for exerting an external effort in order to bring the shells (2,3) together and elements for introducing the polymerizable material into the molding cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.