Sunglasses
US5347323A · kind A · utility
Inventor
Key dates
| Filing date | Sep 3, 1991 |
| Grant date | Sep 13, 1994 |
| Priority date | — |
| Expiry date | Sep 3, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C1/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A pair of sunglasses having an elongated lens support frame member having a pair of elongated grooves formed in its bottom surface for detachably receiving a left lens and a right lens. The lenses have a constant radius in the horizontal planes extending from their top edge to their bottom edge. The grooves in the lens support frame member have a predetermined asymetric curvature that requires the lenses to be bent during insertion or removal. The temple members in sequence from their front end to their rear end have a forward portion, an intermediate correctly oriented letter shaped portion, and a rear portion. The letter shaped portions when viewed from either side of the wearer's head have the same correctly oriented letter design incorporated in the structure of the temple member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.