Eyewear with ventilation
US6692124B2 · kind B2 · utility
Inventors
Key dates
| Filing date | May 20, 2002 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | May 20, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C11/08
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Protective eyewear of the invention includes at least one lens and a frame securing the lens. Temples or a retention strap are provided for attaching the protective eyewear to the head of a user. The frame includes a seal member around the lens with ventilation channels formed in the seal member on its surface for contacting the face of the user. Thus, the seal member forms a substantial enclosure between the lens and the face of the user when the eyewear is worn. The ventilation channels extend into the seal member towards the lens to a depth not reaching the lens and ensure free passage of air from the enclosure to the atmosphere so that moisture condensation on the lens is reduced or eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.