Eyeglass frame permitting interchanging of lenses
US5293185A · kind A · utility
10Cited by
10References
6Claims
0Family size
Inventors
Key dates
| Filing date | Sep 17, 1992 |
| Grant date | Mar 8, 1994 |
| Priority date | — |
| Expiry date | Sep 17, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2200/18
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An eyeglass frame having removable lenses, comprising of lens rings which are split into an upper and lower ring portion. Interposed between the upper and lower ring portions, and forming an integral part of the frame and positive actuating means to force open and draw closed the split lens rings to facilitate insertion and removal of lens. Several spices of eyeglass frame are visualized The preferred spieces utilizes a coil spring and resilient rod. Another spieces visualized utilizes several serrated coupling edges and an actuating fulcrum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.