Reduced-tilt back plastic feature for a contact lens mold
US9283718B2 · kind B2 · utility
0Cited by
17References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 2012 |
| Grant date | Mar 15, 2016 |
| Priority date | — |
| Expiry date | Dec 13, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D11/00038
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A mold assembly for manufacturing ophthalmic lenses which comprises an anti-tilt feature that prevent relative movement of one half of the mold assembly relative to the other half of the mold assembly. The anti-tilt feature ensures that the edges of the ophthalmic lenses are symmetric around their periphery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.