Molds for use in contact lens production
US8535043B2 · kind B2 · utility
3Cited by
20References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2006 |
| Grant date | Sep 17, 2013 |
| Priority date | — |
| Expiry date | Mar 29, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D11/005
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides molds useful in contact lens production, which molds incorporate a centering and spacing feature in the form of tabs on one of the mold halves. The spacing feature both centers the mold halves in relationship to each other and permits free flow of excess monomer from the mold. Additionally, the spacing feature aids in height control of the one mold half in relation to the other mold half.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.