Hinge for mounting spectacles
US4534628A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 12, 1982 |
| Grant date | Aug 13, 1985 |
| Priority date | — |
| Expiry date | Nov 12, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2200/26
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The hinge comprises an elastic return mechanism (8, 12, 13) for the side (5) towards its normal open position, said mechanism being positioned concentrically in the side (5). The elastic return mechanism comprises an envelope (8) which abuts against a spring (12) positioned inside an external casing (13) which is able to slide on the envelope (8). Beyond the normal open position, this casing moves back while sliding around the envelope (8) and causes compression of the spring (12). The envelope (8) which is integrated with the side (5) directly abuts against the spring (12), or a stopping member (16) is interposed between the envelope (8) and the spring (12), this member (16) being integrated with the side (5).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.