Eyeglass frame
US5457504A · kind A · utility
1Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 8, 1994 |
| Grant date | Oct 10, 1995 |
| Priority date | — |
| Expiry date | Sep 8, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C1/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In an eyeglass frame each lens is gripped between a relatively rigid half-rim and a filament. The half-rim is fixed to a tenon in which is formed a cavity opening through an orifice forming a keyhole slot. The filament includes a knot retained in the cavity by the keyhole slot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.