Method and apparatus relating to manufacture of molds for forming contact lenses
US9938034B2 · kind B2 · utility
3Cited by
43References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2014 |
| Grant date | Apr 10, 2018 |
| Priority date | — |
| Expiry date | May 7, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2011/0041
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Methods and apparatus for exchanging tools and/or tool assemblies used to form different types of molds for in injection-molding machines, are described. The exchange of tools and/or tool assemblies is made using a robot. Contact lens mold halves and assemblies for molding contact lenses of different powers or types can be made with a single injection-molding apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.