Frame structure for eyeglasses having a spring-hinge
US5818567A · kind A · utility
37Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1997 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | Feb 26, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2200/32
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is an improved frame structure for glasses using two counter joint pieces loosely coupled with a screw. One of these joint pieces is fixed to the rim projection, and the other joint piece is fixed to the temple, and these joint pieces are pulled toward each other under the resilient influence, which is caused by the spring plate of the joint piece on the temple side, thereby assuring the stable folding and unfolding of the temples on the front, still permitting each temple to move a short distance from the 90 degree-wide unfolding or linear-alignment with the rim projection like the "Spring Hinge".
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.