Method for producing contact lenses
US11279103B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2017 |
| Grant date | Mar 22, 2022 |
| Priority date | — |
| Expiry date | Oct 9, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/043
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention provides a method producing contact lenses, including the step of: holding the molded silicone hydrogel contact lens attached to the one of the female mold half or the male mold half with a vacuum supplied with a suction cup; deforming a surface of the one of the female mold half or the male mold half having the molded silicone hydrogel contact lens attached to with a pin so as to separate the molded silicone hydrogel contact lens from the mold half attached to and to transfer the molded silicone hydrogel contact lens to the suction cup; moving the suction cup away from the pin while the suction cup continues to hold the molded silicone hydrogel contact lens remains; applying a compressed gas to blow the molded silicone hydrogel contact lens away from the suction cup into a container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.