Eyeglass frame and fabrication method
US6077368A · kind A · utility
15Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 1999 |
| Grant date | Jun 20, 2000 |
| Priority date | — |
| Expiry date | May 17, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/006
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A Ni--Ti superelastic alloy demonstrates superelastic properties at normal temperatures from about 0 and 30.degree. C. The superelastic alloy allows shape alteration when the temperature is in excess of 40.degree. C. The Ni--Ti superelastic alloy is produced by plastic working a composition containing essentially Ni and Ti, and subjecting the composition to heat treatment at a temperature between 600 and 800.degree. C. to impart shape memory. When the Ni--Ti superelastic alloy is used in an eyeglass frame, it allows the shape of the pad arms to be adjusted at temperatures above about 40.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.